head 1.1; branch 1.1.1; access; symbols netbsd-11-0-RC5:1.1.1.6 netbsd-11-0-RC4:1.1.1.6 PFIX-3-11-2:1.1.1.6 netbsd-11-0-RC3:1.1.1.6 netbsd-11-0-RC2:1.1.1.6 netbsd-11-0-RC1:1.1.1.6 perseant-exfatfs-base-20250801:1.1.1.6 netbsd-11:1.1.1.6.0.2 netbsd-11-base:1.1.1.6 PFIX-3-10-1:1.1.1.6 netbsd-10-1-RELEASE:1.1.1.5 perseant-exfatfs-base-20240630:1.1.1.5 perseant-exfatfs:1.1.1.5.0.4 perseant-exfatfs-base:1.1.1.5 netbsd-8-3-RELEASE:1.1.1.4 netbsd-9-4-RELEASE:1.1.1.4.26.1 netbsd-10-0-RELEASE:1.1.1.5 netbsd-10-0-RC6:1.1.1.5 netbsd-10-0-RC5:1.1.1.5 netbsd-10-0-RC4:1.1.1.5 netbsd-10-0-RC3:1.1.1.5 netbsd-10-0-RC2:1.1.1.5 PFIX-3-8-4:1.1.1.5 netbsd-10-0-RC1:1.1.1.5 netbsd-10:1.1.1.5.0.2 netbsd-10-base:1.1.1.5 PFIX-3-7-3:1.1.1.5 netbsd-9-3-RELEASE:1.1.1.4 cjep_sun2x-base1:1.1.1.4 cjep_sun2x:1.1.1.4.0.32 cjep_sun2x-base:1.1.1.4 cjep_staticlib_x-base1:1.1.1.4 netbsd-9-2-RELEASE:1.1.1.4 cjep_staticlib_x:1.1.1.4.0.30 cjep_staticlib_x-base:1.1.1.4 netbsd-9-1-RELEASE:1.1.1.4 PFIX-3-5-2:1.1.1.4 phil-wifi-20200421:1.1.1.4 phil-wifi-20200411:1.1.1.4 is-mlppp:1.1.1.4.0.28 is-mlppp-base:1.1.1.4 phil-wifi-20200406:1.1.1.4 netbsd-8-2-RELEASE:1.1.1.4 PFIX-3-5-0:1.1.1.4 netbsd-9-0-RELEASE:1.1.1.4 netbsd-9-0-RC2:1.1.1.4 netbsd-9-0-RC1:1.1.1.4 phil-wifi-20191119:1.1.1.4 netbsd-9:1.1.1.4.0.26 netbsd-9-base:1.1.1.4 phil-wifi-20190609:1.1.1.4 netbsd-8-1-RELEASE:1.1.1.4 netbsd-8-1-RC1:1.1.1.4 pgoyette-compat-merge-20190127:1.1.1.4 pgoyette-compat-20190127:1.1.1.4 pgoyette-compat-20190118:1.1.1.4 pgoyette-compat-1226:1.1.1.4 pgoyette-compat-1126:1.1.1.4 pgoyette-compat-1020:1.1.1.4 pgoyette-compat-0930:1.1.1.4 pgoyette-compat-0906:1.1.1.4 netbsd-7-2-RELEASE:1.1.1.4 pgoyette-compat-0728:1.1.1.4 netbsd-8-0-RELEASE:1.1.1.4 phil-wifi:1.1.1.4.0.24 phil-wifi-base:1.1.1.4 pgoyette-compat-0625:1.1.1.4 netbsd-8-0-RC2:1.1.1.4 pgoyette-compat-0521:1.1.1.4 pgoyette-compat-0502:1.1.1.4 pgoyette-compat-0422:1.1.1.4 netbsd-8-0-RC1:1.1.1.4 pgoyette-compat-0415:1.1.1.4 pgoyette-compat-0407:1.1.1.4 pgoyette-compat-0330:1.1.1.4 pgoyette-compat-0322:1.1.1.4 pgoyette-compat-0315:1.1.1.4 netbsd-7-1-2-RELEASE:1.1.1.4 pgoyette-compat:1.1.1.4.0.22 pgoyette-compat-base:1.1.1.4 netbsd-7-1-1-RELEASE:1.1.1.4 matt-nb8-mediatek:1.1.1.4.0.20 matt-nb8-mediatek-base:1.1.1.4 perseant-stdc-iso10646:1.1.1.4.0.18 perseant-stdc-iso10646-base:1.1.1.4 netbsd-8:1.1.1.4.0.16 netbsd-8-base:1.1.1.4 prg-localcount2-base3:1.1.1.4 prg-localcount2-base2:1.1.1.4 prg-localcount2-base1:1.1.1.4 prg-localcount2:1.1.1.4.0.14 prg-localcount2-base:1.1.1.4 pgoyette-localcount-20170426:1.1.1.4 bouyer-socketcan-base1:1.1.1.4 pgoyette-localcount-20170320:1.1.1.4 netbsd-7-1:1.1.1.4.0.12 netbsd-7-1-RELEASE:1.1.1.4 netbsd-7-1-RC2:1.1.1.4 PFIX-3-1-4:1.1.1.4 netbsd-7-nhusb-base-20170116:1.1.1.4 bouyer-socketcan:1.1.1.4.0.10 bouyer-socketcan-base:1.1.1.4 pgoyette-localcount-20170107:1.1.1.4 netbsd-7-1-RC1:1.1.1.4 pgoyette-localcount-20161104:1.1.1.4 netbsd-7-0-2-RELEASE:1.1.1.4 localcount-20160914:1.1.1.4 netbsd-7-nhusb:1.1.1.4.0.8 netbsd-7-nhusb-base:1.1.1.4 pgoyette-localcount-20160806:1.1.1.4 pgoyette-localcount-20160726:1.1.1.4 pgoyette-localcount:1.1.1.4.0.6 pgoyette-localcount-base:1.1.1.4 netbsd-7-0-1-RELEASE:1.1.1.4 netbsd-7-0:1.1.1.4.0.4 netbsd-7-0-RELEASE:1.1.1.4 PFIX-2-11-6:1.1.1.4 netbsd-7-0-RC3:1.1.1.4 netbsd-7-0-RC2:1.1.1.4 netbsd-7-0-RC1:1.1.1.4 PFIX-2-11-4:1.1.1.4 PFIX-2-11-3:1.1.1.4 netbsd-5-2-3-RELEASE:1.1.1.1.2.2 netbsd-5-1-5-RELEASE:1.1.1.1.2.2 netbsd-6-0-6-RELEASE:1.1.1.2 netbsd-6-1-5-RELEASE:1.1.1.2 netbsd-7:1.1.1.4.0.2 netbsd-7-base:1.1.1.4 PFIX-2-11-1:1.1.1.4 yamt-pagecache-base9:1.1.1.3 yamt-pagecache-tag8:1.1.1.2.4.1 netbsd-6-1-4-RELEASE:1.1.1.2 netbsd-6-0-5-RELEASE:1.1.1.2 tls-earlyentropy:1.1.1.3.0.6 tls-earlyentropy-base:1.1.1.4 riastradh-xf86-video-intel-2-7-1-pre-2-21-15:1.1.1.3 riastradh-drm2-base3:1.1.1.3 PFIX-2-10-3:1.1.1.3 netbsd-6-1-3-RELEASE:1.1.1.2 netbsd-6-0-4-RELEASE:1.1.1.2 netbsd-5-2-2-RELEASE:1.1.1.1.2.2 netbsd-5-1-4-RELEASE:1.1.1.1.2.2 netbsd-6-1-2-RELEASE:1.1.1.2 netbsd-6-0-3-RELEASE:1.1.1.2 PFIX-2-10-2:1.1.1.3 netbsd-5-2-1-RELEASE:1.1.1.1.2.2 netbsd-5-1-3-RELEASE:1.1.1.1.2.2 PFIX-2-9-7:1.1.1.3 netbsd-6-1-1-RELEASE:1.1.1.2 riastradh-drm2-base2:1.1.1.3 riastradh-drm2-base1:1.1.1.3 riastradh-drm2:1.1.1.3.0.2 riastradh-drm2-base:1.1.1.3 netbsd-6-1:1.1.1.2.0.14 netbsd-6-0-2-RELEASE:1.1.1.2 netbsd-6-1-RELEASE:1.1.1.2 netbsd-6-1-RC4:1.1.1.2 netbsd-6-1-RC3:1.1.1.2 agc-symver:1.1.1.3.0.4 agc-symver-base:1.1.1.3 netbsd-6-1-RC2:1.1.1.2 netbsd-6-1-RC1:1.1.1.2 yamt-pagecache-base8:1.1.1.3 PFIX-2-9-5:1.1.1.3 netbsd-5-2:1.1.1.1.2.2.0.6 PFIX-2-8-13:1.1.1.2 netbsd-6-0-1-RELEASE:1.1.1.2 yamt-pagecache-base7:1.1.1.2 netbsd-5-2-RELEASE:1.1.1.1.2.2 netbsd-5-2-RC1:1.1.1.1.2.2 matt-nb6-plus-nbase:1.1.1.2 yamt-pagecache-base6:1.1.1.2 netbsd-6-0:1.1.1.2.0.12 netbsd-6-0-RELEASE:1.1.1.2 netbsd-6-0-RC2:1.1.1.2 tls-maxphys:1.1.1.2.0.10 tls-maxphys-base:1.1.1.4 matt-nb6-plus:1.1.1.2.0.8 matt-nb6-plus-base:1.1.1.2 netbsd-6-0-RC1:1.1.1.2 PFIX-2-8-12:1.1.1.2 PFIX-2-8-11:1.1.1.2 yamt-pagecache-base5:1.1.1.2 yamt-pagecache-base4:1.1.1.2 PFIX-2-8-8:1.1.1.2 netbsd-6:1.1.1.2.0.6 netbsd-6-base:1.1.1.2 netbsd-5-1-2-RELEASE:1.1.1.1.2.2 netbsd-5-1-1-RELEASE:1.1.1.1.2.2 yamt-pagecache-base3:1.1.1.2 PFIX-2-8-7:1.1.1.2 yamt-pagecache-base2:1.1.1.2 yamt-pagecache:1.1.1.2.0.4 yamt-pagecache-base:1.1.1.2 PFIX-2-8-6:1.1.1.2 PFIX-2-8-5:1.1.1.2 PFIX-2-8-4:1.1.1.2 cherry-xenmp:1.1.1.2.0.2 cherry-xenmp-base:1.1.1.2 PFIX-2-8-3:1.1.1.2 PFIX-2-8-2:1.1.1.2 PFIX-2-8-1:1.1.1.2 bouyer-quota2-nbase:1.1.1.2 bouyer-quota2:1.1.1.1.0.6 bouyer-quota2-base:1.1.1.1 matt-mips64-premerge-20101231:1.1.1.1 matt-nb5-mips64-premerge-20101231:1.1.1.1.4.2 matt-nb5-pq3:1.1.1.1.2.2.0.4 matt-nb5-pq3-base:1.1.1.1.2.2 PFIX-2-7-2:1.1.1.1 netbsd-5-1:1.1.1.1.2.2.0.2 netbsd-5-1-RELEASE:1.1.1.1.2.2 netbsd-5-1-RC4:1.1.1.1.2.2 matt-nb5-mips64-k15:1.1.1.1.4.2 PFIX-2-7-1:1.1.1.1 netbsd-5-1-RC3:1.1.1.1.2.2 netbsd-5-1-RC2:1.1.1.1.2.2 netbsd-5-1-RC1:1.1.1.1.2.2 matt-nb5-mips64:1.1.1.1.0.4 PFIX-2-6-6:1.1.1.1 matt-premerge-20091211:1.1.1.1 netbsd-5:1.1.1.1.0.2 PFIX-2-6-5:1.1.1.1 PFIX-2-6-2:1.1.1.1 VENEMA:1.1.1; locks; strict; comment @# @; 1.1 date 2009.06.23.10.08.18; author tron; state Exp; branches 1.1.1.1; next ; 1.1.1.1 date 2009.06.23.10.08.18; author tron; state Exp; branches 1.1.1.1.2.1 1.1.1.1.4.1 1.1.1.1.6.1; next 1.1.1.2; 1.1.1.2 date 2011.03.02.19.31.26; author tron; state Exp; branches 1.1.1.2.4.1 1.1.1.2.10.1; next 1.1.1.3; 1.1.1.3 date 2013.01.02.18.58.30; author tron; state Exp; branches 1.1.1.3.6.1; next 1.1.1.4; 1.1.1.4 date 2014.07.06.19.27.35; author tron; state Exp; branches 1.1.1.4.26.1; next 1.1.1.5; commitid 5TVMY9WFpCELTlHx; 1.1.1.5 date 2022.10.08.16.09.00; author christos; state Exp; branches 1.1.1.5.4.1; next 1.1.1.6; commitid kRUbAM0nqDWDQVWD; 1.1.1.6 date 2025.02.25.19.11.34; author christos; state Exp; branches; next ; commitid cLFKwpXD6DqXOSKF; 1.1.1.1.2.1 date 2009.06.23.10.08.18; author snj; state dead; branches; next 1.1.1.1.2.2; 1.1.1.1.2.2 date 2009.09.15.06.02.06; author snj; state Exp; branches; next ; 1.1.1.1.4.1 date 2009.06.23.10.08.18; author matt; state dead; branches; next 1.1.1.1.4.2; 1.1.1.1.4.2 date 2010.04.21.05.23.24; author matt; state Exp; branches; next ; 1.1.1.1.6.1 date 2011.03.05.15.08.52; author bouyer; state Exp; branches; next ; 1.1.1.2.4.1 date 2013.01.23.00.04.48; author yamt; state Exp; branches; next ; 1.1.1.2.10.1 date 2013.02.25.00.27.04; author tls; state Exp; branches; next 1.1.1.2.10.2; 1.1.1.2.10.2 date 2014.08.19.23.59.40; author tls; state Exp; branches; next ; commitid jTnpym9Qu0o4R1Nx; 1.1.1.3.6.1 date 2014.08.10.07.12.46; author tls; state Exp; branches; next ; commitid 0tNMy3UM0qm8IMLx; 1.1.1.4.26.1 date 2023.12.25.12.54.30; author martin; state Exp; branches; next ; commitid yzNdlh5ioUjfxQRE; 1.1.1.5.4.1 date 2025.08.02.05.49.47; author perseant; state Exp; branches; next ; commitid 23j6GFaDws3O875G; desc @@ 1.1 log @Initial revision @ text @PPoossttffiixx BBaacckkssccaatttteerr HHoowwttoo ------------------------------------------------------------------------------- OOvveerrvviieeww This document describes features that require Postfix version 2.0 or later. Topics covered in this document: * What is backscatter mail? * How do I block backscatter mail to random recipient addresses? * How do I block backscatter mail to real recipient addresses? o Blocking backscatter mail with forged mail server information o Blocking backscatter mail with forged sender information o Blocking backscatter mail with other forged information o Blocking backscatter mail from virus scanners The examples use Perl Compatible Regular Expressions (Postfix pcre: tables), but also provide a translation to POSIX regular expressions (Postfix regexp: tables). PCRE is preferred primarily because the implementation is often faster. WWhhaatt iiss bbaacckkssccaatttteerr mmaaiill?? When a spammer or worm sends mail with forged sender addresses, innocent sites are flooded with undeliverable mail notifications. This is called backscatter mail. With Postfix, you know that you're a backscatter victim when your logfile goes on and on like this: Dec 4 04:30:09 hostname postfix/smtpd[58549]: NOQUEUE: reject: RCPT from xxxxxxx[x.x.x.x]: 550 5.1.1 : Recipient address rejected: User unknown; from=<> to= proto=ESMTP helo= What you see are lots of "user unknown" errors with "from=<>". These are error reports from MAILER-DAEMONs elsewhere on the Internet. HHooww ddoo II bblloocckk bbaacckkssccaatttteerr mmaaiill ttoo rraannddoomm rreecciippiieenntt aaddddrreesssseess?? If your machine receives backscatter mail to random addresses, configure Postfix to reject all mail for non-existent recipients as described in the LOCAL_RECIPIENT_README and STANDARD_CONFIGURATION_README documentation. If your machine runs Postfix 2.0 and earlier, disable the "pause before reject" feature in the SMTP server. If your system is under stress then it should not waste time. /etc/postfix/main.cf: # Not needed with Postfix 2.1 and later. smtpd_error_sleep_time = 0 # Not needed with Postfix 2.4 and later. unknown_local_recipient_reject_code = 550 HHooww ddoo II bblloocckk bbaacckkssccaatttteerr mmaaiill ttoo rreeaall rreecciippiieenntt aaddddrreesssseess?? When backscatter mail passes the "unknown recipient" barrier, there still is no need to despair. Many mail systems are kind enough to attach the message headers of the undeliverable mail in the non-delivery notification. These message headers contain information that you can use to recognize and block forged mail. BBlloocckkiinngg bbaacckkssccaatttteerr mmaaiill wwiitthh ffoorrggeedd mmaaiill sseerrvveerr iinnffoorrmmaattiioonn Although my email address is "wietse@@porcupine.org", all my mail systems announce themselves with the SMTP HELO command as "hostname.porcupine.org". Thus, if returned mail has a Received: message header like this: Received: from porcupine.org ... Then I know that this is almost certainly forged mail (almost; see next section for the fly in the ointment). Mail that is really sent by my systems looks like this: Received: from hostname.porcupine.org ... For the same reason the following message headers are very likely to be the result of forgery: Received: from host.example.com ([1.2.3.4] helo=porcupine.org) ... Received: from [1.2.3.4] (port=12345 helo=porcupine.org) ... Received: from host.example.com (HELO porcupine.org) ... Received: from host.example.com (EHLO porcupine.org) ... Some forgeries show up in the way that a mail server reports itself in Received: message headers. Keeping in mind that all my systems have a mail server name of hostname.porcupine.org, the following is definitely a forgery: Received: by porcupine.org ... Received: from host.example.com ( ... ) by porcupine.org ... Another frequent sign of forgery is the Message-ID: header. My systems produce a Message-ID: of . The following are forgeries, especially the first one: Message-ID: <1cb479435d8eb9.2beb1.qmail@@porcupine.org> Message-ID: To block such backscatter I use header_checks and body_checks patterns like this: /etc/postfix/main.cf: header_checks = pcre:/etc/postfix/header_checks body_checks = pcre:/etc/postfix/body_checks /etc/postfix/header_checks: if /^Received:/ /^Received: +from +(porcupine\.org) +/ reject forged client name in Received: header: $1 /^Received: +from +[^ ]+ +\(([^ ]+ +[he]+lo=|[he]+lo +) (porcupine\.org)\)/ reject forged client name in Received: header: $2 /^Received:.* +by +(porcupine\.org)\b/ reject forged mail server name in Received: header: $1 endif /^Message-ID:.* ]*Received:/ /^[> ]*Received: +from +(porcupine\.org) / reject forged client name in Received: header: $1 /^[> ]*Received: +from +[^ ]+ +\(([^ ]+ +[he]+lo=|[he]+lo +) (porcupine\.org)\)/ reject forged client name in Received: header: $2 /^[> ]*Received:.* +by +(porcupine\.org)\b/ reject forged mail server name in Received: header: $1 endif /^[> ]*Message-ID:.* ]*Message-ID:.*@@(porcupine\.org)/ reject forged domain name in Message-ID: header: $1 Notes: * The example uses pcre: tables mainly for speed; with minor modifications, you can use regexp: tables as explained below. * The example is simplified for educational purposes. In reality my patterns list multiple domain names, as "(domain|domain|...)". * The "\." matches "." literally. Without the "\", the "." would match any character. * The "\(" and "\)" match "(" and ")" literally. Without the "\", the "(" and ")" would be grouping operators. * The "\b" is used here to match the end of a word. If you use regexp: tables, specify "[[:>:]]" (on some systems you should specify "\>" instead; for details see your system documentation). * The "if /pattern/" and "endif" eliminate unnecessary matching attempts. DO NOT indent lines starting with /pattern/ between the "if" and "endif"! * The two "Message-ID:.* where example.com is the domain name part of the email address specified in Outlook's account settings for the user. Since many users configure their email addresses as username@@example.com, messages with DSN turned on will trigger the REJECT action in the previous section. If you have such clients then you can to exclude their Message-ID strings with the two "Message-ID:.* ]*(From|Return-Path):.*\b(user@@domain\.tld)\b/ reject forged sender address in $1: header: $2 Notes: * The example uses pcre: tables mainly for speed; with minor modifications, you can use regexp: tables as explained below. * The example is simplified for educational purposes. In reality, my patterns list multiple email addresses as "(user1@@domain1\.tld|user2@@domain2\.tld)". * The two "\b" as used in "\b(user@@domain\.tld)\b" match the beginning and end of a word, respectively. If you use regexp: tables, specify "[[:<:]] and [[:>:]]" (on some systems you should specify "\< and \>" instead; for details see your system documentation). * The "\." matches "." literally. Without the "\", the "." would match any character. BBlloocckkiinngg bbaacckkssccaatttteerr mmaaiill wwiitthh ootthheerr ffoorrggeedd iinnffoorrmmaattiioonn Another sign of forgery can be found in the IP address that is recorded in Received: headers next to your HELO host or domain name. This information must be used with care, though. Some mail servers are behind a network address translator and never see the true client IP address. BBlloocckkiinngg bbaacckkssccaatttteerr mmaaiill ffrroomm vviirruuss ssccaannnneerrss With all the easily recognizable forgeries eliminated, there is one category of backscatter mail that remains, and that is notifications from virus scanner software. Unfortunately, some virus scanning software doesn't know that viruses forge sender addresses. To make matters worse, the software also doesn't know how to report a mail delivery problem, so that we cannot use the above techniques to recognize forgeries. Recognizing virus scanner mail is an error prone process, because there is a lot of variation in report formats. The following is only a small example of message header patterns. For a large collection of header and body patterns that recognize virus notification email, see http://www.dkuug.dk/keld/virus/ or http://www.t29.dk/antiantivirus.txt. /etc/postfix/header_checks: /^Subject: *Your email contains VIRUSES/ DISCARD virus notification /^Content-Disposition:.*VIRUS1_DETECTED_AND_REMOVED/ DISCARD virus notification /^Content-Disposition:.*VirusWarning.txt/ DISCARD virus notification Note: these documents haven't been updated since 2004, so they are useful only as a starting point. A plea to virus or spam scanner operators: please do not make the problem worse by sending return mail to forged sender addresses. You're only harassing innocent people. If you must return mail to the purported sender, please return the full message headers, so that the sender can filter out the obvious forgeries. @ 1.1.1.1 log @Import Postfix 2.6.2. @ text @@ 1.1.1.1.6.1 log @Sync with HEAD @ text @d38 1 a38 2 reports from MAILER-DAEMONs elsewhere on the Internet, about email that was sent with a false sender address in your domain. a108 1 # Do not indent the text between "if" and "endif". a122 1 # Do not indent the text between "if" and "endif". @ 1.1.1.2 log @Import Postfix 2.8.1. Changes since version 2.7.*: Postfix stable release 2.8.0 is available. This release continues the move towards improving code and documentation, and making the system better prepared for changes in the threat environment. The postscreen daemon (a zombie blocker in front of Postfix) is now included with the stable release. postscreen now supports TLS and can log the rejected sender, recipient and helo information. See the POSTSCREEN_README file for recommended usage scenarios. Support for DNS whitelisting (permit_rhswl_client), and for pattern matching to filter the responses from DNS white/blacklist servers (e.g., reject_rhsbl_client zen.spamhaus.org=127.0.0.[1..10]). Improved message tracking across SMTP-based content filters; the after-filter SMTP server can log the before-filter queue ID (the XCLIENT protocol was extended). Read-only support for sqlite databases. See sqlite_table(5) and SQLITE_README. Support for 'footers' that are appended to SMTP server "reject" responses. See "smtpd_reject_footer" in the postconf(5) manpage. @ text @d38 1 a38 2 reports from MAILER-DAEMONs elsewhere on the Internet, about email that was sent with a false sender address in your domain. a108 1 # Do not indent the text between "if" and "endif". a122 1 # Do not indent the text between "if" and "endif". @ 1.1.1.2.10.1 log @resync with head @ text @d110 1 a110 1 # Do not indent the patterns between "if" and "endif". d125 1 a125 1 # Do not indent the patterns between "if" and "endif". @ 1.1.1.2.10.2 log @Rebase to HEAD as of a few days ago. @ text @d122 1 a122 1 reject forged domain name in Message-ID: header: $1 d137 1 a137 1 reject forged domain name in Message-ID: header: $1 @ 1.1.1.2.4.1 log @sync with head @ text @d110 1 a110 1 # Do not indent the patterns between "if" and "endif". d125 1 a125 1 # Do not indent the patterns between "if" and "endif". @ 1.1.1.3 log @Import Postfix 2.9.5. Major changes since version 2.8.x: - Support for long, non-repeating, queue IDs (queue file names). The main benefit of non-repeating names is simpler logfile analysis. See the description of "enable_long_queue_ids" in postconf(5) for details. - Memcache client support, and support to share postscreen(8) and verify(8) caches via the proxymap server. Details about memcache support are in memcache_table(5) and MEMCACHE_README. - Gradual degradation: if a database is unavailable (can't open, most read or write errors) a Postfix daemon will log a warning and continue providing the services that don't depend on that table, instead of immediately terminating with a fatal error. To terminate immediately when a database file can't be opened, specify "daemon_table_open_error_is_fatal = yes". - Revised postconf(1) command. It warns about unused parameter name=value settings in main.cf or master.cf (likely mistakes), understands "dynamic" parameter names such as names that depend on the name of a master.cf entry (finally, "postconf -n" shows all parameter settings), and it can display main.cf and master.cf in a more user-friendly format (postconf -nf, postconf -Mf). - Read/write deadline support in the SMTP client and server to defend against application-level DOS attacks that very slowly write or read data one byte at a time. @ text @d110 1 a110 1 # Do not indent the patterns between "if" and "endif". d125 1 a125 1 # Do not indent the patterns between "if" and "endif". @ 1.1.1.3.6.1 log @Rebase. @ text @d122 1 a122 1 reject forged domain name in Message-ID: header: $1 d137 1 a137 1 reject forged domain name in Message-ID: header: $1 @ 1.1.1.4 log @Import Postfix 2.11.1. The main changes since version 2.10.* are: - Support for PKI-less TLS server certificate verification with DANE (DNS-based Authentication of Named Entities) where the CA public key or the server certificate is identified via DNSSEC lookup. This requires a DNS resolver that validates DNSSEC replies. The problem with conventional PKI is that there are literally hundreds of organizations world-wide that can provide a certificate in anyone's name. DANE limits trust to the people who control the target DNS zone and its parent zones. - A new postscreen_dnsbl_whitelist_threshold feature to allow clients to skip postscreen tests based on their DNSBL score. This can eliminate email delays due to "after 220 greeting" protocol tests, which otherwise require that a client reconnects before it can deliver mail. Some providers such as Google don't retry from the same IP address, and that can result in large email delivery delays. - The recipient_delimiter feature now supports different delimiters, for example both "+" and "-". As before, this implementation recognizes exactly one delimiter character per email address, and exactly one address extension per email address. - Advanced master.cf query/update support to access service attributes as "name = value" pairs. For example to turn off chroot on all services use "postconf -F '*/*/chroot = n'", and to change/add a "-o name=value" setting use "postconf -P 'smtp/inet/name = value'". This was developed primarily to allow automated tools to manage Postfix systems without having to parse Postfix configuration files. @ text @d122 1 a122 1 reject forged domain name in Message-ID: header: $1 d137 1 a137 1 reject forged domain name in Message-ID: header: $1 @ 1.1.1.4.26.1 log @Pull up the following, requeste by kim in ticket #1779: external/ibm-public/postfix/dist/README_FILES/BDAT_README up to 1.1.1.2 external/ibm-public/postfix/dist/README_FILES/MAILLOG_README up to 1.1.1.4 external/ibm-public/postfix/dist/README_FILES/POSTSCREEN_3_5_README up to 1.1.1.1 external/ibm-public/postfix/dist/html/BDAT_README.html up to 1.1.1.3 external/ibm-public/postfix/dist/html/MAILLOG_README.html up to 1.1.1.4 external/ibm-public/postfix/dist/html/makedefs.1.html up to 1.1.1.3 external/ibm-public/postfix/dist/html/postlogd.8.html up to 1.1.1.3 external/ibm-public/postfix/dist/html/POSTSCREEN_3_5_README.html up to 1.1.1.2 external/ibm-public/postfix/dist/html/postfix-doc.css up to 1.1.1.1 external/ibm-public/postfix/dist/man/man1/makedefs.1 up to 1.3 external/ibm-public/postfix/dist/man/man8/postlogd.8 up to 1.3 external/ibm-public/postfix/dist/mantools/missing-proxy-read-maps up to 1.1.1.3 external/ibm-public/postfix/dist/mantools/spelldiff up to 1.1.1.1 external/ibm-public/postfix/dist/mantools/check-double-cc up to 1.1.1.2 external/ibm-public/postfix/dist/mantools/check-double-install-proto-text up to 1.1.1.2 external/ibm-public/postfix/dist/mantools/check-double-proto-html up to 1.1.1.2 external/ibm-public/postfix/dist/mantools/comment.c up to 1.2 external/ibm-public/postfix/dist/mantools/check-postfix-files up to 1.1.1.2 external/ibm-public/postfix/dist/mantools/check-spell-cc up to 1.1.1.2 external/ibm-public/postfix/dist/mantools/check-spell-install-proto-text up to 1.1.1.2 external/ibm-public/postfix/dist/mantools/check-spell-proto-html up to 1.1.1.2 external/ibm-public/postfix/dist/mantools/deroff up to 1.1.1.1 external/ibm-public/postfix/dist/mantools/find-double up to 1.1.1.1 external/ibm-public/postfix/dist/mantools/check-double-history up to 1.1.1.1 external/ibm-public/postfix/dist/mantools/check-spell-history up to 1.1.1.1 external/ibm-public/postfix/dist/mantools/check-table-proto up to 1.1.1.1 external/ibm-public/postfix/dist/proto/BDAT_README.html up to 1.1.1.3 external/ibm-public/postfix/dist/proto/MAILLOG_README.html up to 1.1.1.4 external/ibm-public/postfix/dist/proto/POSTSCREEN_3_5_README.html up to 1.1.1.2 external/ibm-public/postfix/dist/proto/stop.double-cc up to 1.1.1.2 external/ibm-public/postfix/dist/proto/stop.double-install-proto-text up to 1.1.1.1 external/ibm-public/postfix/dist/proto/stop.double-proto-html up to 1.1.1.2 external/ibm-public/postfix/dist/proto/stop.spell-cc up to 1.1.1.2 external/ibm-public/postfix/dist/proto/stop.spell-proto-html up to 1.1.1.2 external/ibm-public/postfix/dist/proto/stop.double-history up to 1.1.1.1 external/ibm-public/postfix/dist/proto/stop.spell-history up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/bounce_notify_util_tester.c up to 1.2 external/ibm-public/postfix/dist/src/bounce/logfile-no-msgid-no-eoh-event up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/logfile-no-msgid-with-eoh-event up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/logfile-with-msgid-no-eoh-event up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/logfile-with-msgid-with-eoh-event up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/logfile-with-msgid-with-filter up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/logfile-with-msgid-with-long-line up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/msgfile-no-msgid-no-eoh-event up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/msgfile-no-msgid-with-eoh-event up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/msgfile-with-msgid-no-eoh-event up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/msgfile-with-msgid-with-eoh-event up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/obs_template_test.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/msgfile-with-msgid-with-filter up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/msgfile-with-msgid-with-long-line up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/no-msgid-no-eoh-event-no-thread.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/no-msgid-no-eoh-event-with-thread.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/no-msgid-with-eoh-event-no-thread.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/no-msgid-with-eoh-event-with-thread.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/with-msgid-no-eoh-event-no-thread.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/with-msgid-no-eoh-event-with-thread.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/with-msgid-with-eoh-event-no-thread.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/with-msgid-with-eoh-event-with-thread.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/with-msgid-with-filter-no-thread.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/with-msgid-with-filter-with-thread.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/with-msgid-with-long-line-no-thread.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/with-msgid-with-long-line-with-thread.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.in13e up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.in13f up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.in13g up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.in13h up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.in13i up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref13e up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref13f up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref13g up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref13h up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref13i up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/test-queue-file13e up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/test-queue-file13f up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/test-queue-file13g up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/test-queue-file13h up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/test-queue-file13i up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.in17a up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.in17b up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.in17c up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.in17d up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.in17e up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.in17f up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.in17g up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref17a1 up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref17a2 up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref17b1 up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref17b2 up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref17c1 up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref17c2 up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref17d1 up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref17d2 up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref17e1 up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref17e2 up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref17f1 up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref17f2 up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref17g1 up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref17g2 up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/test-queue-file17 up to 1.1.1.1 external/ibm-public/postfix/dist/src/dns/dns_str_resflags.c up to 1.3 external/ibm-public/postfix/dist/src/dns/dns_sec.c up to 1.2 external/ibm-public/postfix/dist/src/global/header_body_checks_strip.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/global/info_log_addr_form.c up to 1.2 external/ibm-public/postfix/dist/src/global/info_log_addr_form.h up to 1.2 external/ibm-public/postfix/dist/src/global/mail_addr_crunch.in up to 1.1.1.1 external/ibm-public/postfix/dist/src/global/mail_addr_crunch.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/global/mail_addr_find.in up to 1.1.1.1 external/ibm-public/postfix/dist/src/global/map_search.c up to 1.4 external/ibm-public/postfix/dist/src/global/map_search.h up to 1.2 external/ibm-public/postfix/dist/src/global/mail_addr_find.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/global/mail_addr_form.c up to 1.2 external/ibm-public/postfix/dist/src/global/mail_addr_form.h up to 1.2 external/ibm-public/postfix/dist/src/global/mail_addr_map.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/global/maillog_client.c up to 1.3 external/ibm-public/postfix/dist/src/global/maillog_client.h up to 1.2 external/ibm-public/postfix/dist/src/global/map_search.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/global/normalize_mailhost_addr.c up to 1.3 external/ibm-public/postfix/dist/src/global/normalize_mailhost_addr.h up to 1.2 external/ibm-public/postfix/dist/src/global/off_cvt.in up to 1.1.1.1 external/ibm-public/postfix/dist/src/global/off_cvt.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/global/quote_822_local.in up to 1.1.1.2 external/ibm-public/postfix/dist/src/global/quote_822_local.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/global/quote_flags.c up to 1.2 external/ibm-public/postfix/dist/src/global/reject_deliver_request.c up to 1.2 external/ibm-public/postfix/dist/src/global/compat_level.c up to 1.3 external/ibm-public/postfix/dist/src/global/compat_level.h up to 1.3 external/ibm-public/postfix/dist/src/global/test_main.c up to 1.2 external/ibm-public/postfix/dist/src/global/compat_level_convert.in up to 1.1.1.1 external/ibm-public/postfix/dist/src/global/compat_level_convert.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/global/compat_level_expand.in up to 1.1.1.1 external/ibm-public/postfix/dist/src/global/compat_level_expand.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/global/config_known_tcp_ports.c up to 1.2 external/ibm-public/postfix/dist/src/global/config_known_tcp_ports.h up to 1.2 external/ibm-public/postfix/dist/src/global/config_known_tcp_ports.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/global/delivered_hdr.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/global/hfrom_format.c up to 1.2 external/ibm-public/postfix/dist/src/global/hfrom_format.h up to 1.2 external/ibm-public/postfix/dist/src/global/hfrom_format.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/global/login_sender_match.c up to 1.2 external/ibm-public/postfix/dist/src/global/login_sender_match.h up to 1.2 external/ibm-public/postfix/dist/src/global/login_sender_match.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/global/sasl_mech_filter.c up to 1.2 external/ibm-public/postfix/dist/src/global/sasl_mech_filter.h up to 1.2 external/ibm-public/postfix/dist/src/global/test_main.h up to 1.2 external/ibm-public/postfix/dist/src/master/dgram_server.c up to 1.3 external/ibm-public/postfix/dist/src/postconf/extract_cfg.sh up to 1.1.1.1 external/ibm-public/postfix/dist/src/postconf/test64.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/postconf/test65.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/postconf/test66.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/postconf/test67.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/postconf/test68.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/postconf/test69.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/postconf/test70.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/postconf/test71.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/postmap/file_test.in up to 1.1.1.1 external/ibm-public/postfix/dist/src/postmap/file_test.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/postmap/quote_test.in up to 1.1.1.1 external/ibm-public/postfix/dist/src/postmap/quote_test.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/postmap/lmdb_abb up to 1.1.1.1 external/ibm-public/postfix/dist/src/postmap/lmdb_abb.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/smtp/smtp_misc.c up to 1.2 external/ibm-public/postfix/dist/src/smtp/smtp_map11.in up to 1.1.1.1 external/ibm-public/postfix/dist/src/smtpd/smtpd_addr_valid.in up to 1.1.1.2 external/ibm-public/postfix/dist/src/smtpd/smtpd_addr_valid.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/tls/bad-back-to-back-keys.pem up to 1.1.1.1 external/ibm-public/postfix/dist/src/tls/bad-back-to-back-keys.pem.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/tls/bad-ec-cert-before-key.pem up to 1.1.1.1 external/ibm-public/postfix/dist/src/tls/bad-ec-cert-before-key.pem.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/tls/bad-key-cert-mismatch.pem up to 1.1.1.1 external/ibm-public/postfix/dist/src/tls/bad-key-cert-mismatch.pem.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/tls/bad-rsa-key-last.pem up to 1.1.1.1 external/ibm-public/postfix/dist/src/tls/bad-rsa-key-last.pem.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/tls/ecca-cert.pem up to 1.1.1.1 external/ibm-public/postfix/dist/src/tls/ecca-pkey.pem up to 1.1.1.1 external/ibm-public/postfix/dist/src/tls/ecee-cert.pem up to 1.1.1.1 external/ibm-public/postfix/dist/src/tls/ecee-pkey.pem up to 1.1.1.1 external/ibm-public/postfix/dist/src/tls/ecroot-cert.pem up to 1.1.1.1 external/ibm-public/postfix/dist/src/tls/ecroot-pkey.pem up to 1.1.1.1 external/ibm-public/postfix/dist/src/tls/good-mixed-keyfirst.pem up to 1.1.1.1 external/ibm-public/postfix/dist/src/tls/good-mixed-keyfirst.pem.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/tls/good-mixed-keylast.pem up to 1.1.1.1 external/ibm-public/postfix/dist/src/tls/good-mixed-keylast.pem.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/tls/good-mixed-keymiddle.pem up to 1.1.1.1 external/ibm-public/postfix/dist/src/tls/good-mixed-keymiddle.pem.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/tls/goodchains.pem up to 1.1.1.1 external/ibm-public/postfix/dist/src/tls/goodchains.pem.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/tls/mkcert.sh up to 1.1.1.1 external/ibm-public/postfix/dist/src/tls/rsaca-cert.pem up to 1.1.1.1 external/ibm-public/postfix/dist/src/tls/rsaca-pkey.pem up to 1.1.1.1 external/ibm-public/postfix/dist/src/tls/rsaee-cert.pem up to 1.1.1.1 external/ibm-public/postfix/dist/src/tls/rsaee-pkey.pem up to 1.1.1.1 external/ibm-public/postfix/dist/src/tls/rsaroot-cert.pem up to 1.1.1.1 external/ibm-public/postfix/dist/src/tls/rsaroot-pkey.pem up to 1.1.1.1 external/ibm-public/postfix/dist/src/tls/tls_proxy_client_misc.c up to 1.4 external/ibm-public/postfix/dist/src/tls/tls_proxy_client_print.c up to 1.4 external/ibm-public/postfix/dist/src/tls/tls_proxy_client_scan.c up to 1.4 external/ibm-public/postfix/dist/src/tls/tls_proxy_context_print.c up to 1.3 external/ibm-public/postfix/dist/src/tls/tls_proxy_context_scan.c up to 1.3 external/ibm-public/postfix/dist/src/tls/tls_proxy_server_print.c up to 1.3 external/ibm-public/postfix/dist/src/tls/tls_proxy_server_scan.c up to 1.3 external/ibm-public/postfix/dist/src/tls/warn-mixed-multi-key.pem up to 1.1.1.1 external/ibm-public/postfix/dist/src/tls/warn-mixed-multi-key.pem.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/trivial-rewrite/transport.in up to 1.1.1.1 external/ibm-public/postfix/dist/src/trivial-rewrite/transport.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/util/mkmap_db.c up to 1.2 external/ibm-public/postfix/dist/src/util/mkmap.h up to 1.2 external/ibm-public/postfix/dist/src/util/argv_attr.h up to 1.3 external/ibm-public/postfix/dist/src/util/argv_attr_print.c up to 1.3 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up to 1.2 external/ibm-public/postfix/dist/src/util/mkmap_sdbm.c up to 1.2 external/ibm-public/postfix/dist/src/postlogd/Makefile.in up to 1.1.1.3 external/ibm-public/postfix/dist/src/postlogd/postlogd.c up to 1.3 external/ibm-public/postfix/dist/RELEASE_NOTES-3.1 up to 1.1.1.1 external/ibm-public/postfix/dist/RELEASE_NOTES-3.2 up to 1.1.1.1 external/ibm-public/postfix/dist/RELEASE_NOTES-3.3 up to 1.1.1.1 external/ibm-public/postfix/dist/RELEASE_NOTES-3.4 up to 1.1.1.1 external/ibm-public/postfix/dist/RELEASE_NOTES-3.5 up to 1.1.1.1 external/ibm-public/postfix/dist/RELEASE_NOTES-3.6 up to 1.1.1.1 external/ibm-public/postfix/dist/WISHLIST up to 1.1.1.2 external/ibm-public/postfix/dist/RELEASE_NOTES-3.7 up to 1.1.1.1 external/ibm-public/postfix/dist/README_FILES/CYRUS_README delete external/ibm-public/postfix/dist/src/global/mkmap.h delete external/ibm-public/postfix/dist/src/global/mkmap_cdb.c delete external/ibm-public/postfix/dist/src/global/mkmap_db.c delete 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external/ibm-public/postfix/dist/Makefile.in up to 1.1.1.10 external/ibm-public/postfix/dist/Makefile.init up to 1.1.1.3 external/ibm-public/postfix/dist/RELEASE_NOTES up to 1.1.1.17 external/ibm-public/postfix/dist/TLS_ACKNOWLEDGEMENTS up to 1.1.1.2 external/ibm-public/postfix/dist/TLS_CHANGES up to 1.1.1.2 external/ibm-public/postfix/dist/TLS_LICENSE up to 1.1.1.2 external/ibm-public/postfix/dist/US_PATENT_6321267 up to 1.1.1.2 external/ibm-public/postfix/dist/makedefs up to 1.16 external/ibm-public/postfix/dist/postfix-env.sh up to 1.1.1.2 external/ibm-public/postfix/dist/postfix-install up to 1.8 external/ibm-public/postfix/dist/README_FILES/AAAREADME up to 1.1.1.6 external/ibm-public/postfix/dist/README_FILES/ADDRESS_CLASS_README up to 1.1.1.2 external/ibm-public/postfix/dist/README_FILES/ADDRESS_REWRITING_README up to 1.1.1.5 external/ibm-public/postfix/dist/README_FILES/ADDRESS_VERIFICATION_README up to 1.10 external/ibm-public/postfix/dist/README_FILES/BACKSCATTER_README up to 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1.1.1.6 external/ibm-public/postfix/dist/html/DSN_README.html up to 1.1.1.3 external/ibm-public/postfix/dist/html/ETRN_README.html up to 1.1.1.4 external/ibm-public/postfix/dist/html/FILTER_README.html up to 1.1.1.5 external/ibm-public/postfix/dist/html/FORWARD_SECRECY_README.html up to 1.1.1.5 external/ibm-public/postfix/dist/html/INSTALL.html up to 1.10 external/ibm-public/postfix/dist/html/IPV6_README.html up to 1.1.1.4 external/ibm-public/postfix/dist/html/LDAP_README.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/LINUX_README.html up to 1.1.1.4 external/ibm-public/postfix/dist/html/LMDB_README.html up to 1.1.1.4 external/ibm-public/postfix/dist/html/LOCAL_RECIPIENT_README.html up to 1.1.1.3 external/ibm-public/postfix/dist/html/MAILDROP_README.html up to 1.1.1.5 external/ibm-public/postfix/dist/html/MEMCACHE_README.html up to 1.1.1.3 external/ibm-public/postfix/dist/html/MILTER_README.html up to 1.1.1.9 external/ibm-public/postfix/dist/html/MULTI_INSTANCE_README.html up to 1.1.1.9 external/ibm-public/postfix/dist/html/MYSQL_README.html up to 1.1.1.5 external/ibm-public/postfix/dist/html/Makefile.in up to 1.1.1.7 external/ibm-public/postfix/dist/html/NFS_README.html up to 1.1.1.3 external/ibm-public/postfix/dist/html/OVERVIEW.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/PACKAGE_README.html up to 1.1.1.5 external/ibm-public/postfix/dist/html/PCRE_README.html up to 1.1.1.4 external/ibm-public/postfix/dist/html/PGSQL_README.html up to 1.1.1.4 external/ibm-public/postfix/dist/html/POSTSCREEN_README.html up to 1.1.1.8 external/ibm-public/postfix/dist/html/QSHAPE_README.html up to 1.1.1.5 external/ibm-public/postfix/dist/html/RESTRICTION_CLASS_README.html up to 1.1.1.5 external/ibm-public/postfix/dist/html/SASL_README.html up to 1.1.1.11 external/ibm-public/postfix/dist/html/SCHEDULER_README.html up to 1.1.1.5 external/ibm-public/postfix/dist/html/SMTPD_ACCESS_README.html up to 1.1.1.7 external/ibm-public/postfix/dist/html/SMTPD_POLICY_README.html up to 1.1.1.8 external/ibm-public/postfix/dist/html/SMTPD_PROXY_README.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/SMTPUTF8_README.html up to 1.1.1.4 external/ibm-public/postfix/dist/html/SOHO_README.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/SQLITE_README.html up to 1.1.1.4 external/ibm-public/postfix/dist/html/STANDARD_CONFIGURATION_README.html up to 1.1.1.7 external/ibm-public/postfix/dist/html/STRESS_README.html up to 1.1.1.7 external/ibm-public/postfix/dist/html/TLS_LEGACY_README.html up to 1.1.1.5 external/ibm-public/postfix/dist/html/TLS_README.html up to 1.15 external/ibm-public/postfix/dist/html/TUNING_README.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/UUCP_README.html up to 1.1.1.4 external/ibm-public/postfix/dist/html/VERP_README.html up to 1.1.1.5 external/ibm-public/postfix/dist/html/VIRTUAL_README.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/XCLIENT_README.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/XFORWARD_README.html up to 1.1.1.4 external/ibm-public/postfix/dist/html/access.5.html up to 1.1.1.9 external/ibm-public/postfix/dist/html/aliases.5.html up to 1.1.1.7 external/ibm-public/postfix/dist/html/anvil.8.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/bounce.5.html up to 1.1.1.5 external/ibm-public/postfix/dist/html/bounce.8.html up to 1.1.1.7 external/ibm-public/postfix/dist/html/canonical.5.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/cidr_table.5.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/cleanup.8.html up to 1.1.1.9 external/ibm-public/postfix/dist/html/defer.8.html up to 1.1.1.7 external/ibm-public/postfix/dist/html/discard.8.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/dnsblog.8.html up to 1.1.1.7 external/ibm-public/postfix/dist/html/error.8.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/flush.8.html up 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1.1.1.2 external/ibm-public/postfix/dist/src/cleanup/cleanup_out.c up to 1.3 external/ibm-public/postfix/dist/src/cleanup/cleanup_out_recipient.c up to 1.4 external/ibm-public/postfix/dist/src/cleanup/cleanup_region.c up to 1.3 external/ibm-public/postfix/dist/src/cleanup/cleanup_state.c up to 1.4 external/ibm-public/postfix/dist/src/discard/Makefile.in up to 1.1.1.3 external/ibm-public/postfix/dist/src/discard/discard.c up to 1.3 external/ibm-public/postfix/dist/src/dns/Makefile.in up to 1.1.1.5 external/ibm-public/postfix/dist/src/dns/dns.h up to 1.6 external/ibm-public/postfix/dist/src/dns/dns_lookup.c up to 1.8 external/ibm-public/postfix/dist/src/dns/dns_rr.c up to 1.3 external/ibm-public/postfix/dist/src/dns/dns_rr_eq_sa.c up to 1.3 external/ibm-public/postfix/dist/src/dns/dns_rr_eq_sa.in up to 1.1.1.3 external/ibm-public/postfix/dist/src/dns/dns_rr_eq_sa.ref up to 1.1.1.5 external/ibm-public/postfix/dist/src/dns/dns_rr_to_pa.ref up to 1.1.1.3 external/ibm-public/postfix/dist/src/dns/dns_rr_to_sa.ref up to 1.1.1.3 external/ibm-public/postfix/dist/src/dns/dns_sa_to_rr.c up to 1.3 external/ibm-public/postfix/dist/src/dns/dns_sa_to_rr.ref up to 1.1.1.5 external/ibm-public/postfix/dist/src/dns/dns_strrecord.c up to 1.3 external/ibm-public/postfix/dist/src/dns/dns_strtype.c up to 1.2 external/ibm-public/postfix/dist/src/dns/dnsbl_ttl_127.0.0.1_bind_ncache.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/dns/dnsbl_ttl_127.0.0.1_bind_plain.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/dns/dnsbl_ttl_127.0.0.2_bind_plain.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/dns/error.ref up to 1.1.1.3 external/ibm-public/postfix/dist/src/dns/mxonly_test.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/dns/no-a.ref up to 1.1.1.3 external/ibm-public/postfix/dist/src/dns/no-aaaa.ref up to 1.1.1.3 external/ibm-public/postfix/dist/src/dns/no-mx.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/dns/nullmx_test.ref up to 1.1.1.3 external/ibm-public/postfix/dist/src/dns/nxdomain_test.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/dns/test_dns_lookup.c up to 1.3 external/ibm-public/postfix/dist/src/dnsblog/Makefile.in up to 1.1.1.3 external/ibm-public/postfix/dist/src/dnsblog/dnsblog.c up to 1.4 external/ibm-public/postfix/dist/src/error/Makefile.in up to 1.1.1.3 external/ibm-public/postfix/dist/src/error/error.c up to 1.3 external/ibm-public/postfix/dist/src/flush/Makefile.in up to 1.1.1.4 external/ibm-public/postfix/dist/src/flush/flush.c up to 1.4 external/ibm-public/postfix/dist/src/fsstone/Makefile.in up to 1.1.1.3 external/ibm-public/postfix/dist/src/global/Makefile.in up to 1.1.1.10 external/ibm-public/postfix/dist/src/global/abounce.c up to 1.3 external/ibm-public/postfix/dist/src/global/anvil_clnt.c up to 1.4 external/ibm-public/postfix/dist/src/global/anvil_clnt.h up to 1.3 external/ibm-public/postfix/dist/src/global/been_here.c up to 1.4 external/ibm-public/postfix/dist/src/global/been_here.h up to 1.3 external/ibm-public/postfix/dist/src/global/bounce.c up to 1.3 external/ibm-public/postfix/dist/src/global/bounce_log.c up to 1.3 external/ibm-public/postfix/dist/src/global/cleanup_strerror.c up to 1.2 external/ibm-public/postfix/dist/src/global/cleanup_user.h up to 1.3 external/ibm-public/postfix/dist/src/global/clnt_stream.c up to 1.4 external/ibm-public/postfix/dist/src/global/clnt_stream.h up to 1.2 external/ibm-public/postfix/dist/src/global/db_common.c up to 1.3 external/ibm-public/postfix/dist/src/global/debug_peer.c up to 1.3 external/ibm-public/postfix/dist/src/global/defer.c up to 1.3 external/ibm-public/postfix/dist/src/global/deliver_pass.c up to 1.3 external/ibm-public/postfix/dist/src/global/deliver_request.c up to 1.3 external/ibm-public/postfix/dist/src/global/deliver_request.h up to 1.3 external/ibm-public/postfix/dist/src/global/delivered_hdr.c up to 1.3 external/ibm-public/postfix/dist/src/global/dict_ldap.c up to 1.5 external/ibm-public/postfix/dist/src/global/dict_memcache.c up to 1.3 external/ibm-public/postfix/dist/src/global/dict_mysql.c up to 1.4 external/ibm-public/postfix/dist/src/global/dict_pgsql.c up to 1.4 external/ibm-public/postfix/dist/src/global/dict_proxy.c up to 1.3 external/ibm-public/postfix/dist/src/global/dict_proxy.h up to 1.3 external/ibm-public/postfix/dist/src/global/dict_sqlite.c up to 1.4 external/ibm-public/postfix/dist/src/global/dsb_scan.c up to 1.3 external/ibm-public/postfix/dist/src/global/dsb_scan.h up to 1.2 external/ibm-public/postfix/dist/src/global/dsn_print.c up to 1.3 external/ibm-public/postfix/dist/src/global/dsn_print.h up to 1.2 external/ibm-public/postfix/dist/src/global/dynamicmaps.c up to 1.4 external/ibm-public/postfix/dist/src/global/ehlo_mask.c up to 1.3 external/ibm-public/postfix/dist/src/global/ehlo_mask.h up to 1.3 external/ibm-public/postfix/dist/src/global/flush_clnt.c up to 1.3 external/ibm-public/postfix/dist/src/global/haproxy_srvr.c up to 1.3 external/ibm-public/postfix/dist/src/global/haproxy_srvr.h up to 1.2 external/ibm-public/postfix/dist/src/global/header_body_checks.c up to 1.3 external/ibm-public/postfix/dist/src/global/header_body_checks.h up to 1.3 external/ibm-public/postfix/dist/src/global/log_adhoc.c up to 1.3 external/ibm-public/postfix/dist/src/global/mail_addr_crunch.c up to 1.3 external/ibm-public/postfix/dist/src/global/mail_addr_crunch.h up to 1.2 external/ibm-public/postfix/dist/src/global/mail_addr_find.c up to 1.4 external/ibm-public/postfix/dist/src/global/mail_addr_find.h up to 1.2 external/ibm-public/postfix/dist/src/global/mail_addr_map.c up to 1.3 external/ibm-public/postfix/dist/src/global/mail_addr_map.h up to 1.2 external/ibm-public/postfix/dist/src/global/mail_command_client.c up to 1.4 external/ibm-public/postfix/dist/src/global/mail_conf.c up to 1.3 external/ibm-public/postfix/dist/src/global/mail_conf.h up to 1.3 external/ibm-public/postfix/dist/src/global/mail_conf_int.c up to 1.3 external/ibm-public/postfix/dist/src/global/mail_conf_long.c up to 1.2 external/ibm-public/postfix/dist/src/global/mail_conf_nint.c up to 1.2 external/ibm-public/postfix/dist/src/global/mail_conf_time.c up to 1.4 external/ibm-public/postfix/dist/src/global/mail_copy.c up to 1.3 external/ibm-public/postfix/dist/src/global/mail_dict.c up to 1.3 external/ibm-public/postfix/dist/src/global/mail_error.c up to 1.2 external/ibm-public/postfix/dist/src/global/mail_params.c up to 1.5 external/ibm-public/postfix/dist/src/global/mail_params.h up to 1.19 external/ibm-public/postfix/dist/src/global/mail_parm_split.c up to 1.3 external/ibm-public/postfix/dist/src/global/mail_proto.h up to 1.5 external/ibm-public/postfix/dist/src/global/mail_queue.h up to 1.3 external/ibm-public/postfix/dist/src/global/mail_stream.c up to 1.3 external/ibm-public/postfix/dist/src/global/mail_task.c up to 1.3 external/ibm-public/postfix/dist/src/global/mail_version.h up to 1.6 external/ibm-public/postfix/dist/src/global/maps.c up to 1.4 external/ibm-public/postfix/dist/src/global/maps.h up to 1.2 external/ibm-public/postfix/dist/src/global/maps.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/global/memcache_proto.c up to 1.3 external/ibm-public/postfix/dist/src/global/mime_state.c up to 1.3 external/ibm-public/postfix/dist/src/global/mkmap_proxy.c up to 1.2 external/ibm-public/postfix/dist/src/global/msg_stats.h up to 1.2 external/ibm-public/postfix/dist/src/global/msg_stats_print.c up to 1.3 external/ibm-public/postfix/dist/src/global/msg_stats_scan.c up to 1.3 external/ibm-public/postfix/dist/src/global/namadr_list.in up to 1.1.1.4 external/ibm-public/postfix/dist/src/global/namadr_list.ref up to 1.1.1.5 external/ibm-public/postfix/dist/src/global/off_cvt.c up to 1.2 external/ibm-public/postfix/dist/src/global/opened.c up to 1.2 external/ibm-public/postfix/dist/src/global/post_mail.c up to 1.4 external/ibm-public/postfix/dist/src/global/post_mail.h up to 1.3 external/ibm-public/postfix/dist/src/global/quote_822_local.c up to 1.3 external/ibm-public/postfix/dist/src/global/quote_822_local.h up to 1.2 external/ibm-public/postfix/dist/src/global/quote_flags.h up to 1.2 external/ibm-public/postfix/dist/src/global/rcpt_buf.c up to 1.4 external/ibm-public/postfix/dist/src/global/rcpt_buf.h up to 1.2 external/ibm-public/postfix/dist/src/global/rcpt_print.c up to 1.3 external/ibm-public/postfix/dist/src/global/rcpt_print.h up to 1.2 external/ibm-public/postfix/dist/src/global/rec_type.h up to 1.3 external/ibm-public/postfix/dist/src/global/record.c up to 1.4 external/ibm-public/postfix/dist/src/global/resolve_clnt.c up to 1.4 external/ibm-public/postfix/dist/src/global/resolve_clnt.h up to 1.2 external/ibm-public/postfix/dist/src/global/rewrite_clnt.c up to 1.3 external/ibm-public/postfix/dist/src/global/scache.h up to 1.3 external/ibm-public/postfix/dist/src/global/scache_clnt.c up to 1.3 external/ibm-public/postfix/dist/src/global/sent.c up to 1.3 external/ibm-public/postfix/dist/src/global/server_acl.c up to 1.3 external/ibm-public/postfix/dist/src/global/server_acl.in up to 1.1.1.2 external/ibm-public/postfix/dist/src/global/server_acl.ref up to 1.1.1.3 external/ibm-public/postfix/dist/src/global/smtp_reply_footer.c up to 1.3 external/ibm-public/postfix/dist/src/global/smtp_stream.c up to 1.5 external/ibm-public/postfix/dist/src/global/smtp_stream.h up to 1.4 external/ibm-public/postfix/dist/src/global/smtputf8.h up to 1.3 external/ibm-public/postfix/dist/src/global/split_addr.c up to 1.3 external/ibm-public/postfix/dist/src/global/split_addr.h up to 1.2 external/ibm-public/postfix/dist/src/global/strip_addr.c up to 1.4 external/ibm-public/postfix/dist/src/global/strip_addr.h up to 1.2 external/ibm-public/postfix/dist/src/global/strip_addr.ref up to 1.1.1.3 external/ibm-public/postfix/dist/src/global/trace.c up to 1.3 external/ibm-public/postfix/dist/src/global/uxtext.c up to 1.3 external/ibm-public/postfix/dist/src/global/verify.c up to 1.4 external/ibm-public/postfix/dist/src/global/verify_clnt.c up to 1.3 external/ibm-public/postfix/dist/src/global/verify_sender_addr.c up to 1.4 external/ibm-public/postfix/dist/src/global/xtext.c up to 1.3 external/ibm-public/postfix/dist/src/local/Makefile.in up to 1.1.1.8 external/ibm-public/postfix/dist/src/local/alias.c up to 1.3 external/ibm-public/postfix/dist/src/local/forward.c up to 1.4 external/ibm-public/postfix/dist/src/local/local.c up to 1.4 external/ibm-public/postfix/dist/src/local/local_expand.c up to 1.3 external/ibm-public/postfix/dist/src/local/mailbox.c up to 1.4 external/ibm-public/postfix/dist/src/local/unknown.c up to 1.8 external/ibm-public/postfix/dist/src/master/Makefile.in up to 1.1.1.7 external/ibm-public/postfix/dist/src/master/event_server.c up to 1.4 external/ibm-public/postfix/dist/src/master/mail_server.h up to 1.4 external/ibm-public/postfix/dist/src/master/master.c up to 1.4 external/ibm-public/postfix/dist/src/master/master.h up to 1.2 external/ibm-public/postfix/dist/src/master/master_conf.c up to 1.2 external/ibm-public/postfix/dist/src/master/master_ent.c up to 1.4 external/ibm-public/postfix/dist/src/master/master_listen.c up to 1.2 external/ibm-public/postfix/dist/src/master/master_monitor.c up to 1.3 external/ibm-public/postfix/dist/src/master/master_proto.h up to 1.2 external/ibm-public/postfix/dist/src/master/master_sig.c up to 1.3 external/ibm-public/postfix/dist/src/master/master_spawn.c up to 1.3 external/ibm-public/postfix/dist/src/master/master_vars.c up to 1.3 external/ibm-public/postfix/dist/src/master/master_wakeup.c up to 1.3 external/ibm-public/postfix/dist/src/master/multi_server.c up to 1.4 external/ibm-public/postfix/dist/src/master/single_server.c up to 1.4 external/ibm-public/postfix/dist/src/master/trigger_server.c up to 1.4 external/ibm-public/postfix/dist/src/milter/Makefile.in up to 1.1.1.4 external/ibm-public/postfix/dist/src/milter/milter.c up to 1.5 external/ibm-public/postfix/dist/src/milter/milter.h up to 1.4 external/ibm-public/postfix/dist/src/milter/milter8.c up to 1.5 external/ibm-public/postfix/dist/src/milter/milter_macros.c up to 1.3 external/ibm-public/postfix/dist/src/milter/test-milter.c up to 1.3 external/ibm-public/postfix/dist/src/oqmgr/Makefile.in up to 1.1.1.5 external/ibm-public/postfix/dist/src/oqmgr/qmgr.c up to 1.3 external/ibm-public/postfix/dist/src/oqmgr/qmgr.h up to 1.3 external/ibm-public/postfix/dist/src/oqmgr/qmgr_active.c up to 1.3 external/ibm-public/postfix/dist/src/oqmgr/qmgr_deliver.c up to 1.3 external/ibm-public/postfix/dist/src/oqmgr/qmgr_entry.c up to 1.3 external/ibm-public/postfix/dist/src/oqmgr/qmgr_error.c up to 1.2 external/ibm-public/postfix/dist/src/oqmgr/qmgr_feedback.c up to 1.2 external/ibm-public/postfix/dist/src/oqmgr/qmgr_message.c up to 1.4 external/ibm-public/postfix/dist/src/pickup/Makefile.in up to 1.1.1.3 external/ibm-public/postfix/dist/src/pickup/pickup.c up to 1.4 external/ibm-public/postfix/dist/src/pipe/Makefile.in up to 1.1.1.4 external/ibm-public/postfix/dist/src/pipe/pipe.c up to 1.4 external/ibm-public/postfix/dist/src/postalias/Makefile.in up to 1.1.1.6 external/ibm-public/postfix/dist/src/postalias/fail_test.in up to 1.1.1.2 external/ibm-public/postfix/dist/src/postalias/fail_test.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/postalias/postalias.c up to 1.5 external/ibm-public/postfix/dist/src/postcat/Makefile.in up to 1.1.1.5 external/ibm-public/postfix/dist/src/postcat/postcat.c up to 1.4 external/ibm-public/postfix/dist/src/postconf/Makefile.in up to 1.1.1.11 external/ibm-public/postfix/dist/src/postconf/extract.awk up to 1.1.1.6 external/ibm-public/postfix/dist/src/postconf/install_vars.h up to 1.2 external/ibm-public/postfix/dist/src/postconf/postconf.c up to 1.4 external/ibm-public/postfix/dist/src/postconf/postconf.h up to 1.4 external/ibm-public/postfix/dist/src/postconf/postconf_builtin.c up to 1.4 external/ibm-public/postfix/dist/src/postconf/postconf_dbms.c up to 1.5 external/ibm-public/postfix/dist/src/postconf/postconf_edit.c up to 1.3 external/ibm-public/postfix/dist/src/postconf/postconf_lookup.c up to 1.4 external/ibm-public/postfix/dist/src/postconf/postconf_main.c up to 1.4 external/ibm-public/postfix/dist/src/postconf/postconf_master.c up to 1.8 external/ibm-public/postfix/dist/src/postconf/postconf_misc.c up to 1.3 external/ibm-public/postfix/dist/src/postconf/postconf_user.c up to 1.4 external/ibm-public/postfix/dist/src/postconf/test28.ref up to 1.1.1.3 external/ibm-public/postfix/dist/src/postconf/test29.ref up to 1.1.1.3 external/ibm-public/postfix/dist/src/postconf/test34.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/postconf/test35.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/postconf/test40.ref up to 1.1.1.4 external/ibm-public/postfix/dist/src/postconf/test41.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/postconf/test42.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/postconf/test43.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/postconf/test44.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/postconf/test58.ref up to 1.1.1.3 external/ibm-public/postfix/dist/src/postconf/test59.ref up to 1.1.1.3 external/ibm-public/postfix/dist/src/postdrop/Makefile.in up to 1.1.1.5 external/ibm-public/postfix/dist/src/postdrop/postdrop.c up to 1.4 external/ibm-public/postfix/dist/src/postfix/Makefile.in up to 1.1.1.5 external/ibm-public/postfix/dist/src/postfix/postfix.c up to 1.6 external/ibm-public/postfix/dist/src/postkick/Makefile.in up to 1.1.1.4 external/ibm-public/postfix/dist/src/postkick/postkick.c up to 1.4 external/ibm-public/postfix/dist/src/postlock/Makefile.in up to 1.1.1.4 external/ibm-public/postfix/dist/src/postlock/postlock.c up to 1.4 external/ibm-public/postfix/dist/src/postlog/Makefile.in up to 1.1.1.5 external/ibm-public/postfix/dist/src/postlog/postlog.c up to 1.5 external/ibm-public/postfix/dist/src/postmap/Makefile.in up to 1.1.1.7 external/ibm-public/postfix/dist/src/postmap/fail_test.in up to 1.1.1.2 external/ibm-public/postfix/dist/src/postmap/fail_test.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/postmap/postmap.c up to 1.5 external/ibm-public/postfix/dist/src/postmulti/Makefile.in up to 1.1.1.4 external/ibm-public/postfix/dist/src/postmulti/postmulti.c up to 1.4 external/ibm-public/postfix/dist/src/postqueue/Makefile.in up to 1.1.1.5 external/ibm-public/postfix/dist/src/postqueue/postqueue.c up to 1.5 external/ibm-public/postfix/dist/src/postqueue/showq_compat.c up to 1.4 external/ibm-public/postfix/dist/src/postqueue/showq_json.c up to 1.4 external/ibm-public/postfix/dist/src/postscreen/Makefile.in up to 1.1.1.7 external/ibm-public/postfix/dist/src/postscreen/postscreen.c up to 1.5 external/ibm-public/postfix/dist/src/postscreen/postscreen.h up to 1.4 external/ibm-public/postfix/dist/src/postscreen/postscreen_dnsbl.c up to 1.4 external/ibm-public/postfix/dist/src/postscreen/postscreen_early.c up to 1.4 external/ibm-public/postfix/dist/src/postscreen/postscreen_endpt.c up to 1.4 external/ibm-public/postfix/dist/src/postscreen/postscreen_haproxy.c up to 1.3 external/ibm-public/postfix/dist/src/postscreen/postscreen_haproxy.h up to 1.2 external/ibm-public/postfix/dist/src/postscreen/postscreen_misc.c up to 1.4 external/ibm-public/postfix/dist/src/postscreen/postscreen_send.c up to 1.3 external/ibm-public/postfix/dist/src/postscreen/postscreen_smtpd.c up to 1.5 external/ibm-public/postfix/dist/src/postscreen/postscreen_starttls.c up to 1.4 external/ibm-public/postfix/dist/src/postscreen/postscreen_state.c up to 1.4 external/ibm-public/postfix/dist/src/postscreen/postscreen_tests.c up to 1.4 external/ibm-public/postfix/dist/src/postsuper/Makefile.in up to 1.1.1.4 external/ibm-public/postfix/dist/src/postsuper/postsuper.c up to 1.4 external/ibm-public/postfix/dist/src/posttls-finger/Makefile.in up to 1.1.1.4 external/ibm-public/postfix/dist/src/posttls-finger/posttls-finger.c up to 1.5 external/ibm-public/postfix/dist/src/proxymap/Makefile.in up to 1.1.1.6 external/ibm-public/postfix/dist/src/proxymap/proxymap.c up to 1.4 external/ibm-public/postfix/dist/src/qmgr/Makefile.in up to 1.1.1.5 external/ibm-public/postfix/dist/src/qmgr/qmgr.c up to 1.3 external/ibm-public/postfix/dist/src/qmgr/qmgr.h up to 1.3 external/ibm-public/postfix/dist/src/qmgr/qmgr_active.c up to 1.3 external/ibm-public/postfix/dist/src/qmgr/qmgr_deliver.c up to 1.3 external/ibm-public/postfix/dist/src/qmgr/qmgr_entry.c up to 1.3 external/ibm-public/postfix/dist/src/qmgr/qmgr_error.c up to 1.2 external/ibm-public/postfix/dist/src/qmgr/qmgr_feedback.c up to 1.2 external/ibm-public/postfix/dist/src/qmgr/qmgr_message.c up to 1.4 external/ibm-public/postfix/dist/src/qmqpd/Makefile.in up to 1.1.1.6 external/ibm-public/postfix/dist/src/qmqpd/qmqpd.c up to 1.4 external/ibm-public/postfix/dist/src/qmqpd/qmqpd_peer.c up to 1.3 external/ibm-public/postfix/dist/src/scache/Makefile.in up to 1.1.1.3 external/ibm-public/postfix/dist/src/scache/scache.c up to 1.4 external/ibm-public/postfix/dist/src/sendmail/Makefile.in up to 1.1.1.4 external/ibm-public/postfix/dist/src/sendmail/sendmail.c up to 1.4 external/ibm-public/postfix/dist/src/showq/Makefile.in up to 1.1.1.3 external/ibm-public/postfix/dist/src/showq/showq.c up to 1.5 external/ibm-public/postfix/dist/src/smtp/Makefile.in up to 1.1.1.10 external/ibm-public/postfix/dist/src/smtp/lmtp_params.c up to 1.5 external/ibm-public/postfix/dist/src/smtp/smtp.c up to 1.13 external/ibm-public/postfix/dist/src/smtp/smtp.h up to 1.5 external/ibm-public/postfix/dist/src/smtp/smtp_addr.c up to 1.5 external/ibm-public/postfix/dist/src/smtp/smtp_addr.h up to 1.3 external/ibm-public/postfix/dist/src/smtp/smtp_chat.c up to 1.4 external/ibm-public/postfix/dist/src/smtp/smtp_connect.c up to 1.5 external/ibm-public/postfix/dist/src/smtp/smtp_key.c up to 1.3 external/ibm-public/postfix/dist/src/smtp/smtp_map11.c up to 1.3 external/ibm-public/postfix/dist/src/smtp/smtp_map11.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/smtp/smtp_params.c up to 1.5 external/ibm-public/postfix/dist/src/smtp/smtp_proto.c up to 1.5 external/ibm-public/postfix/dist/src/smtp/smtp_rcpt.c up to 1.3 external/ibm-public/postfix/dist/src/smtp/smtp_reuse.c up to 1.4 external/ibm-public/postfix/dist/src/smtp/smtp_sasl_auth_cache.c up to 1.3 external/ibm-public/postfix/dist/src/smtp/smtp_sasl_glue.c up to 1.3 external/ibm-public/postfix/dist/src/smtp/smtp_sasl_proto.c up to 1.3 external/ibm-public/postfix/dist/src/smtp/smtp_session.c up to 1.5 external/ibm-public/postfix/dist/src/smtp/smtp_state.c up to 1.3 external/ibm-public/postfix/dist/src/smtp/smtp_tls_policy.c up to 1.4 external/ibm-public/postfix/dist/src/smtp/smtp_trouble.c up to 1.3 external/ibm-public/postfix/dist/src/smtpd/Makefile.in up to 1.1.1.11 external/ibm-public/postfix/dist/src/smtpd/pfilter.c up to 1.2 (+patch) external/ibm-public/postfix/dist/src/smtpd/smtpd.c up to 1.20 external/ibm-public/postfix/dist/src/smtpd/smtpd.h up to 1.5 external/ibm-public/postfix/dist/src/smtpd/smtpd_acl.in up to 1.1.1.2 external/ibm-public/postfix/dist/src/smtpd/smtpd_acl.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/smtpd/smtpd_chat.c up to 1.4 external/ibm-public/postfix/dist/src/smtpd/smtpd_chat.h up to 1.3 external/ibm-public/postfix/dist/src/smtpd/smtpd_check.c up to 1.6 external/ibm-public/postfix/dist/src/smtpd/smtpd_check.h up to 1.3 external/ibm-public/postfix/dist/src/smtpd/smtpd_check.in up to 1.1.1.3 external/ibm-public/postfix/dist/src/smtpd/smtpd_check.in2 up to 1.1.1.3 external/ibm-public/postfix/dist/src/smtpd/smtpd_check.in3 up to 1.1.1.2 external/ibm-public/postfix/dist/src/smtpd/smtpd_check.ref up to 1.1.1.5 external/ibm-public/postfix/dist/src/smtpd/smtpd_check.ref2 up to 1.1.1.3 external/ibm-public/postfix/dist/src/smtpd/smtpd_check_backup.in up to 1.1.1.3 external/ibm-public/postfix/dist/src/smtpd/smtpd_check_backup.ref up to 1.1.1.3 external/ibm-public/postfix/dist/src/smtpd/smtpd_check_dsn.in up to 1.1.1.2 external/ibm-public/postfix/dist/src/smtpd/smtpd_check_dsn.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/smtpd/smtpd_dns_filter.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/smtpd/smtpd_dnswl.in up to 1.1.1.4 external/ibm-public/postfix/dist/src/smtpd/smtpd_dnswl.ref up to 1.1.1.4 external/ibm-public/postfix/dist/src/smtpd/smtpd_error.in up to 1.1.1.2 external/ibm-public/postfix/dist/src/smtpd/smtpd_error.ref up to 1.1.1.4 external/ibm-public/postfix/dist/src/smtpd/smtpd_exp.in up to 1.1.1.3 external/ibm-public/postfix/dist/src/smtpd/smtpd_exp.ref up to 1.1.1.5 external/ibm-public/postfix/dist/src/smtpd/smtpd_expand.h up to 1.3 external/ibm-public/postfix/dist/src/smtpd/smtpd_haproxy.c up to 1.3 external/ibm-public/postfix/dist/src/smtpd/smtpd_milter.c up to 1.3 external/ibm-public/postfix/dist/src/smtpd/smtpd_nullmx.in up to 1.1.1.2 external/ibm-public/postfix/dist/src/smtpd/smtpd_nullmx.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/smtpd/smtpd_peer.c up to 1.5 external/ibm-public/postfix/dist/src/smtpd/smtpd_proxy.c up to 1.3 external/ibm-public/postfix/dist/src/smtpd/smtpd_resolve.c up to 1.3 external/ibm-public/postfix/dist/src/smtpd/smtpd_resolve.h up to 1.3 external/ibm-public/postfix/dist/src/smtpd/smtpd_sasl_glue.c up to 1.5 external/ibm-public/postfix/dist/src/smtpd/smtpd_sasl_proto.c up to 1.3 external/ibm-public/postfix/dist/src/smtpd/smtpd_server.in up to 1.1.1.4 external/ibm-public/postfix/dist/src/smtpd/smtpd_server.ref up to 1.1.1.4 external/ibm-public/postfix/dist/src/smtpd/smtpd_state.c up to 1.2 external/ibm-public/postfix/dist/src/smtpstone/Makefile.in up to 1.1.1.5 external/ibm-public/postfix/dist/src/smtpstone/smtp-sink.c up to 1.3 external/ibm-public/postfix/dist/src/smtpstone/smtp-source.c up to 1.3 external/ibm-public/postfix/dist/src/spawn/Makefile.in up to 1.1.1.5 external/ibm-public/postfix/dist/src/spawn/spawn.c up to 1.4 external/ibm-public/postfix/dist/src/tls/Makefile.in up to 1.1.1.10 external/ibm-public/postfix/dist/src/tls/tls.h up to 1.5 external/ibm-public/postfix/dist/src/tls/tls_bio_ops.c up to 1.1.1.6 external/ibm-public/postfix/dist/src/tls/tls_certkey.c up to 1.4 external/ibm-public/postfix/dist/src/tls/tls_client.c up to 1.13 external/ibm-public/postfix/dist/src/tls/tls_dane.c up to 1.5 external/ibm-public/postfix/dist/src/tls/tls_dh.c up to 1.5 external/ibm-public/postfix/dist/src/tls/tls_fprint.c up to 1.4 external/ibm-public/postfix/dist/src/tls/tls_mgr.c up to 1.4 external/ibm-public/postfix/dist/src/tls/tls_misc.c up to 1.5 external/ibm-public/postfix/dist/src/tls/tls_proxy.h up to 1.4 external/ibm-public/postfix/dist/src/tls/tls_proxy_clnt.c up to 1.4 external/ibm-public/postfix/dist/src/tls/tls_rsa.c up to 1.4 external/ibm-public/postfix/dist/src/tls/tls_scache.c up to 1.4 external/ibm-public/postfix/dist/src/tls/tls_server.c up to 1.12 external/ibm-public/postfix/dist/src/tls/tls_session.c up to 1.3 external/ibm-public/postfix/dist/src/tls/tls_verify.c up to 1.4 external/ibm-public/postfix/dist/src/tlsmgr/Makefile.in up to 1.1.1.6 external/ibm-public/postfix/dist/src/tlsmgr/tlsmgr.c up to 1.4 external/ibm-public/postfix/dist/src/tlsproxy/Makefile.in up to 1.1.1.4 external/ibm-public/postfix/dist/src/tlsproxy/tlsproxy.c up to 1.6 external/ibm-public/postfix/dist/src/tlsproxy/tlsproxy.h up to 1.2 external/ibm-public/postfix/dist/src/tlsproxy/tlsproxy_state.c up to 1.3 external/ibm-public/postfix/dist/src/trivial-rewrite/Makefile.in up to 1.1.1.5 external/ibm-public/postfix/dist/src/trivial-rewrite/resolve.c up to 1.4 external/ibm-public/postfix/dist/src/trivial-rewrite/rewrite.c up to 1.3 external/ibm-public/postfix/dist/src/trivial-rewrite/transport.c up to 1.4 external/ibm-public/postfix/dist/src/trivial-rewrite/trivial-rewrite.c up to 1.4 external/ibm-public/postfix/dist/src/trivial-rewrite/trivial-rewrite.h up to 1.3 external/ibm-public/postfix/dist/src/util/Makefile.in up to 1.1.1.11 external/ibm-public/postfix/dist/src/util/allascii.c up to 1.3 external/ibm-public/postfix/dist/src/util/alldig.c up to 1.2 external/ibm-public/postfix/dist/src/util/argv.c up to 1.4 external/ibm-public/postfix/dist/src/util/argv.h up to 1.4 external/ibm-public/postfix/dist/src/util/attr.h up to 1.5 external/ibm-public/postfix/dist/src/util/attr_clnt.c up to 1.3 external/ibm-public/postfix/dist/src/util/attr_clnt.h up to 1.3 external/ibm-public/postfix/dist/src/util/attr_print0.c up to 1.3 external/ibm-public/postfix/dist/src/util/attr_print64.c up to 1.3 external/ibm-public/postfix/dist/src/util/attr_print_plain.c up to 1.3 external/ibm-public/postfix/dist/src/util/attr_scan0.c up to 1.3 external/ibm-public/postfix/dist/src/util/attr_scan0.ref up to 1.1.1.3 external/ibm-public/postfix/dist/src/util/attr_scan64.c up to 1.3 external/ibm-public/postfix/dist/src/util/attr_scan64.ref up to 1.1.1.3 external/ibm-public/postfix/dist/src/util/attr_scan_plain.c up to 1.3 external/ibm-public/postfix/dist/src/util/attr_scan_plain.ref up to 1.1.1.3 external/ibm-public/postfix/dist/src/util/auto_clnt.c up to 1.4 external/ibm-public/postfix/dist/src/util/auto_clnt.h up to 1.2 external/ibm-public/postfix/dist/src/util/base32_code.h up to 1.3 external/ibm-public/postfix/dist/src/util/base64_code.h up to 1.3 external/ibm-public/postfix/dist/src/util/binhash.c up to 1.3 external/ibm-public/postfix/dist/src/util/binhash.h up to 1.3 external/ibm-public/postfix/dist/src/util/casefold.c up to 1.3 external/ibm-public/postfix/dist/src/util/check_arg.h up to 1.3 external/ibm-public/postfix/dist/src/util/cidr_match.c up to 1.4 external/ibm-public/postfix/dist/src/util/cidr_match.h up to 1.2 external/ibm-public/postfix/dist/src/util/clean_env.c up to 1.3 external/ibm-public/postfix/dist/src/util/clean_env.h up to 1.2 external/ibm-public/postfix/dist/src/util/connect.h up to 1.2 external/ibm-public/postfix/dist/src/util/dict.c up to 1.4 external/ibm-public/postfix/dist/src/util/dict.h up to 1.5 external/ibm-public/postfix/dist/src/util/dict_alloc.c up to 1.3 external/ibm-public/postfix/dist/src/util/dict_cache.c up to 1.4 external/ibm-public/postfix/dist/src/util/dict_cdb.c up to 1.3 external/ibm-public/postfix/dist/src/util/dict_cdb.h up to 1.2 external/ibm-public/postfix/dist/src/util/dict_cidr.c up to 1.5 external/ibm-public/postfix/dist/src/util/dict_cidr.in up to 1.1.1.2 external/ibm-public/postfix/dist/src/util/dict_cidr.map up to 1.1.1.2 external/ibm-public/postfix/dist/src/util/dict_cidr.ref up to 1.1.1.4 external/ibm-public/postfix/dist/src/util/dict_db.c up to 1.4 external/ibm-public/postfix/dist/src/util/dict_db.h up to 1.4 external/ibm-public/postfix/dist/src/util/dict_dbm.h up to 1.2 external/ibm-public/postfix/dist/src/util/dict_fail.c up to 1.2 external/ibm-public/postfix/dist/src/util/dict_fail.h up to 1.2 external/ibm-public/postfix/dist/src/util/dict_inline.c up to 1.4 external/ibm-public/postfix/dist/src/util/dict_lmdb.c up to 1.4 external/ibm-public/postfix/dist/src/util/dict_lmdb.h up to 1.3 external/ibm-public/postfix/dist/src/util/dict_open.c up to 1.4 external/ibm-public/postfix/dist/src/util/dict_pcre.c up to 1.5 external/ibm-public/postfix/dist/src/util/dict_pcre.in up to 1.1.1.2 external/ibm-public/postfix/dist/src/util/dict_pcre.map up to 1.1.1.3 external/ibm-public/postfix/dist/src/util/dict_pcre.ref up to 1.1.1.4 external/ibm-public/postfix/dist/src/util/dict_random.c up to 1.4 external/ibm-public/postfix/dist/src/util/dict_random.h up to 1.3 external/ibm-public/postfix/dist/src/util/dict_regexp.c up to 1.5 external/ibm-public/postfix/dist/src/util/dict_regexp.map up to 1.1.1.2 external/ibm-public/postfix/dist/src/util/dict_regexp.ref up to 1.1.1.3 external/ibm-public/postfix/dist/src/util/dict_sdbm.h up to 1.2 external/ibm-public/postfix/dist/src/util/dict_static.c up to 1.4 external/ibm-public/postfix/dist/src/util/dict_thash.c up to 1.4 external/ibm-public/postfix/dist/src/util/dict_thash.map up to 1.1.1.3 external/ibm-public/postfix/dist/src/util/dict_union.c up to 1.3 external/ibm-public/postfix/dist/src/util/dict_utf8.c up to 1.3 external/ibm-public/postfix/dist/src/util/dict_utf8_test.in up to 1.1.1.2 external/ibm-public/postfix/dist/src/util/dup2_pass_on_exec.c up to 1.2 external/ibm-public/postfix/dist/src/util/edit_file.c up to 1.4 external/ibm-public/postfix/dist/src/util/edit_file.h up to 1.3 external/ibm-public/postfix/dist/src/util/extpar.c up to 1.4 external/ibm-public/postfix/dist/src/util/find_inet.c up to 1.3 external/ibm-public/postfix/dist/src/util/gccw.c up to 1.2 external/ibm-public/postfix/dist/src/util/hex_code.c up to 1.3 external/ibm-public/postfix/dist/src/util/hex_code.h up to 1.4 external/ibm-public/postfix/dist/src/util/hex_quote.c up to 1.2 external/ibm-public/postfix/dist/src/util/host_port.h up to 1.3 external/ibm-public/postfix/dist/src/util/htable.c up to 1.4 external/ibm-public/postfix/dist/src/util/inet_addr_host.c up to 1.3 external/ibm-public/postfix/dist/src/util/inet_addr_list.in up to 1.1.1.2 external/ibm-public/postfix/dist/src/util/inet_addr_list.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/util/inet_connect.c up to 1.3 external/ibm-public/postfix/dist/src/util/inet_listen.c up to 1.3 external/ibm-public/postfix/dist/src/util/inet_proto.c up to 1.4 external/ibm-public/postfix/dist/src/util/inet_proto.h up to 1.2 external/ibm-public/postfix/dist/src/util/killme_after.c up to 1.2 external/ibm-public/postfix/dist/src/util/listen.h up to 1.3 external/ibm-public/postfix/dist/src/util/load_lib.c up to 1.3 external/ibm-public/postfix/dist/src/util/lstat_as.h up to 1.3 external/ibm-public/postfix/dist/src/util/mac_expand.c up to 1.4 external/ibm-public/postfix/dist/src/util/mac_expand.h up to 1.4 external/ibm-public/postfix/dist/src/util/mac_expand.in up to 1.1.1.4 external/ibm-public/postfix/dist/src/util/mac_expand.ref up to 1.1.1.4 external/ibm-public/postfix/dist/src/util/mac_parse.h up to 1.3 external/ibm-public/postfix/dist/src/util/make_dirs.c up to 1.2 external/ibm-public/postfix/dist/src/util/match_list.c up to 1.3 external/ibm-public/postfix/dist/src/util/match_ops.c up to 1.3 external/ibm-public/postfix/dist/src/util/midna_domain.c up to 1.4 external/ibm-public/postfix/dist/src/util/midna_domain.h up to 1.4 external/ibm-public/postfix/dist/src/util/midna_domain_test.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/util/msg_output.c up to 1.4 external/ibm-public/postfix/dist/src/util/msg_output.h up to 1.3 external/ibm-public/postfix/dist/src/util/msg_syslog.c up to 1.2 external/ibm-public/postfix/dist/src/util/msg_syslog.h up to 1.3 external/ibm-public/postfix/dist/src/util/mvect.c up to 1.3 external/ibm-public/postfix/dist/src/util/myaddrinfo.c up to 1.3 external/ibm-public/postfix/dist/src/util/myaddrinfo.h up to 1.3 external/ibm-public/postfix/dist/src/util/myaddrinfo.ref up to 1.1.1.5 external/ibm-public/postfix/dist/src/util/myaddrinfo4.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/util/myflock.c up to 1.3 external/ibm-public/postfix/dist/src/util/myflock.h up to 1.3 external/ibm-public/postfix/dist/src/util/mymalloc.c up to 1.4 external/ibm-public/postfix/dist/src/util/mymalloc.h up to 1.4 external/ibm-public/postfix/dist/src/util/mystrtok.c up to 1.4 external/ibm-public/postfix/dist/src/util/name_mask.c up to 1.3 external/ibm-public/postfix/dist/src/util/nbbio.c up to 1.3 external/ibm-public/postfix/dist/src/util/netstring.c up to 1.3 external/ibm-public/postfix/dist/src/util/peekfd.c up to 1.3 external/ibm-public/postfix/dist/src/util/printable.c up to 1.3 external/ibm-public/postfix/dist/src/util/recv_pass_attr.c up to 1.3 external/ibm-public/postfix/dist/src/util/sane_fsops.h up to 1.3 external/ibm-public/postfix/dist/src/util/sane_link.c up to 1.2 external/ibm-public/postfix/dist/src/util/sane_rename.c up to 1.2 external/ibm-public/postfix/dist/src/util/sane_socketpair.h up to 1.3 external/ibm-public/postfix/dist/src/util/slmdb.c up to 1.4 external/ibm-public/postfix/dist/src/util/sock_addr.c up to 1.3 external/ibm-public/postfix/dist/src/util/sock_addr.h up to 1.2 external/ibm-public/postfix/dist/src/util/split_nameval.c up to 1.2 external/ibm-public/postfix/dist/src/util/stat_as.h up to 1.3 external/ibm-public/postfix/dist/src/util/stringops.h up to 1.5 external/ibm-public/postfix/dist/src/util/sys_compat.c up to 1.3 external/ibm-public/postfix/dist/src/util/sys_defs.h up to 1.14 external/ibm-public/postfix/dist/src/util/timed_wait.h up to 1.3 external/ibm-public/postfix/dist/src/util/unix_pass_fd_fix.c up to 1.2 external/ibm-public/postfix/dist/src/util/unix_send_fd.c up to 1.8 external/ibm-public/postfix/dist/src/util/unsafe.c up to 1.2 external/ibm-public/postfix/dist/src/util/valid_hostname.c up to 1.3 external/ibm-public/postfix/dist/src/util/valid_hostname.h up to 1.2 external/ibm-public/postfix/dist/src/util/vbuf.c up to 1.3 external/ibm-public/postfix/dist/src/util/vbuf_print.c up to 1.4 external/ibm-public/postfix/dist/src/util/vstream.c up to 1.4 external/ibm-public/postfix/dist/src/util/vstream.h up to 1.4 external/ibm-public/postfix/dist/src/util/vstream_tweak.c up to 1.3 external/ibm-public/postfix/dist/src/util/vstring.c up to 1.4 external/ibm-public/postfix/dist/src/util/vstring.h up to 1.4 external/ibm-public/postfix/dist/src/util/vstring_vstream.c up to 1.2 external/ibm-public/postfix/dist/src/util/vstring_vstream.h up to 1.3 external/ibm-public/postfix/dist/src/util/watchdog.c up to 1.3 external/ibm-public/postfix/dist/src/verify/Makefile.in up to 1.1.1.6 external/ibm-public/postfix/dist/src/verify/verify.c up to 1.4 external/ibm-public/postfix/dist/src/virtual/Makefile.in up to 1.1.1.5 external/ibm-public/postfix/dist/src/virtual/mailbox.c up to 1.3 external/ibm-public/postfix/dist/src/virtual/virtual.c up to 1.4 external/ibm-public/postfix/dist/src/xsasl/Makefile.in up to 1.1.1.4 external/ibm-public/postfix/dist/src/xsasl/xsasl.h up to 1.3 external/ibm-public/postfix/dist/src/xsasl/xsasl_cyrus_client.c up to 1.3 external/ibm-public/postfix/dist/src/xsasl/xsasl_cyrus_server.c up to 1.4 external/ibm-public/postfix/dist/src/xsasl/xsasl_dovecot_server.c up to 1.4 external/ibm-public/postfix/dist/src/xsasl/xsasl_saslc_client.c up to 1.2 external/ibm-public/postfix/dist/src/xsasl/xsasl_server.c up to 1.2 external/ibm-public/postfix/lib/dns/Makefile up to 1.4 external/ibm-public/postfix/lib/global/Makefile up to 1.10 external/ibm-public/postfix/lib/masterlib/Makefile up to 1.3 external/ibm-public/postfix/lib/milter/Makefile up to 1.2 external/ibm-public/postfix/lib/tls/Makefile up to 1.4 external/ibm-public/postfix/lib/util/Makefile up to 1.11 external/ibm-public/postfix/lib/xsasl/Makefile up to 1.3 external/ibm-public/postfix/libexec/smtp/Makefile up to 1.4 external/ibm-public/postfix/libexec/smtpd/Makefile up to 1.9 (+patch) external/ibm-public/postfix/libexec/tlsproxy/Makefile up to 1.2 external/ibm-public/postfix/sbin/postconf/Makefile up to 1.9 doc/3RDPARTY (apply patch) Update Postfix to 3.8.4. @ text @d203 2 a204 2 If you have such clients then you can exclude their Message-ID strings with the two "Message-ID:.* . If delivery of the file is still desired, the file can be moved back to /var/spool/postfix/incoming after updating Postfix and executing "postfix reload". Major changes - configuration ----------------------------- [Feature 20210605] Support to inline the content of small cidr:, pcre:, and regexp: tables in Postfix parameter values. Example: smtpd_forbidden_commands = CONNECT GET POST regexp:{{/^[^A-Z]/ Thrash}} This is the new smtpd_forbidden_commands default value. It will immediately disconnect a remote SMTP client when a command does not start with a letter (a-z or A-Z). The basic syntax is: /etc/postfix/main.cf: parameter = .. map-type:{ { rule-1 }, { rule-2 } .. } .. /etc/postfix/master.cf: .. -o { parameter = .. map-type:{ { rule-1 }, { rule-2 } .. } .. } .. where map-type is one of cidr, pcre, or regexp. Postfix ignores whitespace after '{' and before '}', and writes each rule as one text line to a nameless in-memory file: in-memory file: rule-1 rule-2 .. Postfix parses the result as if it is a file in /etc/postfix. Note: if a rule contains $, specify $$ to keep Postfix from trying to do $name expansion as it evaluates the parameter value. Major changes - lmdb support ---------------------------- [Feature 20210605] Overhauled the LMDB client's error handling, and added integration tests for future-proofing. There are no visible changes in documented behavior. Major changes - logging ----------------------- [Feature 20210815] To make the maillog_file feature more useful, the postlog(1) command is now set-gid postdrop, so that unprivileged programs can use it to write logging through the postlogd(8) daemon. This required hardening the postlog(1) command against privilege escalation attacks. DO NOT turn on the set-gid bit with older postlog(1) implementations. Major changes - pcre2 support ----------------------------- [Feature 20211127] Support for the pcre2 library (the legacy pcre library is no longer maintained). The Postfix build procedure automatically detects if the pcre2 library is installed, and if it is unavailable, the Postfix build procedure will detect if the legacy pcre library is installed. See PCRE_README if you need to build Postfix with a specific library. Visible differences: some error messages may have a different text, and the 'X' pattern flag is no longer supported with pcre2. Major changes - security ------------------------ [Feature 20220102] Postfix programs now randomize the initial state of in-memory hash tables, to defend against hash collision attacks involving a large number of attacker-chosen lookup keys. Presently, the only known opportunity for such attacks involves remote SMTP client IPv6 addresses in the anvil(8) service. The attack would require making hundreds of short-lived connections per second from thousands of different IP addresses, because the anvil(8) service drops inactive counters after 100s. Other in-memory hash tables with attacker-chosen lookup keys are by design limited in size. The fix is cheap, and therefore implemented for all Postfix in-memory hash tables. Problem reported by Pascal Junod. [Feature 20211030] The postqueue command now sanitizes non-printable characters (such as newlines) in strings before they are formatted as json or as legacy output. These outputs are piped into other programs that are run by administrative users. This closes a hypothetical opportunity for privilege escalation. [Feature 20210815] Updated defense against remote clients or servers that 'trickle' SMTP or LMTP traffic, based on per-request deadlines and minimum data rates. Per-request deadlines: The new {smtpd,smtp,lmtp}_per_request_deadline parameters replace {smtpd,smtp,lmtp}_per_record_deadline, with backwards compatible default settings. This defense is enabled by default in the Postfix SMTP server in case of overload. The new smtpd_per_record_deadline parameter limits the combined time for the Postfix SMTP server to receive a request and to send a response, while the new {smtp,lmtp}_per_record_deadline parameters limit the combined time for the Postfix SMTP or LMTP client to send a request and to receive a response. Minimum data rates: The new smtpd_min_data_rate parameter enforces a minimum plaintext data transfer rate for DATA and BDAT requests, but only when smtpd_per_record_deadline is enabled. After a read operation transfers N plaintext bytes (possibly after TLS decryption), and after the DATA or BDAT request deadline is decreased by the elapsed time of that read operation, the DATA or BDAT request deadline is increased by N/smtpd_min_data_rate seconds. However, the deadline is never increased beyond the smtpd_timeout value. The default minimum data rate is 500 (bytes/second) but is still subject to change. The new {smtp,lmtp}_min_data_rate parameters enforce the corresponding minimum DATA transfer rates for the Postfix SMTP and LMTP client. Major changes - tls support --------------------------- [Cleanup 20220121] The new tlsproxy_client_security_level parameter replaces tlsproxy_client_level, and the new tlsproxy_client_policy_maps parameter replaces tlsproxy_client_policy. This is for consistent parameter naming (tlsproxy_client_xxx corresponds to smtp_tls_xxx). This change was made with backwards-compatible default settings. [Feature 20210926] Postfix was updated to support OpenSSL 3.0.0 API features, and to work around OpenSSL 3.0.0 bit-rot (avoid using deprecated API features). Other code health ----------------- [typos] Typo fixes by raf. [pre-release checks] Added pre-release checks to detect a) new typos in documentation and source-code comments, b) missing entries in the postfix-files file (some documentation would not be installed), c) missing rules in the postlink script (some text would not have a hyperlink in documentation), and d) missing map-based $parameter names in the proxy_read_maps default value (the proxymap daemon would not automatically authorize some proxied maps). [memory stream] Improved support for memory-based streams made it possible to inline small cidr:, pcre:, and regexp: maps in Postfix parameter values, and to eliminate some ad-hoc code that converted tlsproxy(8) protocol data to or from serialized form. ************************************************************************* This is the Postfix 3.6 (stable) release. The stable Postfix release is called postfix-3.6.x where 3=major release number, 6=minor release number, x=patchlevel. The stable release never changes except for patches that address bugs or emergencies. Patches change the patchlevel and the release date. New features are developed in snapshot releases. These are called postfix-3.7-yyyymmdd where yyyymmdd is the release date (yyyy=year, mm=month, dd=day). Patches are never issued for snapshot releases; instead, a new snapshot is released. The mail_release_date configuration parameter (format: yyyymmdd) specifies the release date of a stable release or snapshot release. If you upgrade from Postfix 3.4 or earlier, read RELEASE_NOTES-3.5 before proceeding. License change --------------- This software is distributed with a dual license: in addition to the historical IBM Public License 1.0, it is now also distributed with the more recent Eclipse Public License 2.0. Recipients can choose to take the software under the license of their choice. Those who are more comfortable with the IPL can continue with that license. Major changes - internal protocol identification ------------------------------------------------ [Incompat 20200920] Internal protocols have changed. You need to "postfix stop" before updating, or before backing out to an earlier release, otherwise long-running daemons (pickup, qmgr, verify, tlsproxy, postscreen) may fail to communicate with the rest of Postfix, causing mail delivery delays until Postfix is restarted. This change does not affect message files in Postfix queue directories, only the communication between running Postfix programs. With this change, every Postfix internal service, including the postdrop command, announces the name of its protocol before doing any other I/O. Every Postfix client program, including the Postfix sendmail command, will verify that the protocol name matches what it is supposed to be. The purpose of this change is to produce better error messages, for example, when someone configures the discard daemon as a bounce service in master.cf, or vice versa. This change may break third-party programs that implement a Postfix-internal protocol such as qpsmtpd. Such programs have never been supported. Fortunately, this will be an easy fix: look at the first data from the cleanup daemon: if it is a protocol announcement, you're talking to Postfix 3.6 or later. That's the only real change. Major changes - tls ------------------- [Incompat 20200705] The minimum supported OpenSSL version is 1.1.1, which will reach the end of life by 2023-09-11. Postfix 3.6 is expected to reach the end of support in 2025. Until then, Postfix will be updated as needed for compatibility with OpenSSL. The default fingerprint digest has changed from md5 to sha256 (Postfix 3.6 with compatibility_level >= 3.6). With a lower compatibility_level setting, Postfix defaults to using md5, and logs a warning when a Postfix configuration specifies no explicit digest type. Export-grade Diffie-Hellman key exchange is no longer supported, and the tlsproxy_tls_dh512_param_file parameter is ignored, [Feature 20200906] The tlstype.pl helper script by Viktor Dukhovni reports TLS information per message delivery. This processes output from the collate.pl script. See auxiliary/collate/README.tlstype and auxiliary/collate/tlstype.pl. Major changes - compatibility level ----------------------------------- [Feature 20210109] Starting with Postfix version 3.6, the compatibility level is "3.6". In future Postfix releases, the compatibility level will be the Postfix version that introduced the last incompatible change. The level is formatted as 'major.minor.patch', where 'patch' is usually omitted and defaults to zero. Earlier compatibility levels are 0, 1 and 2. This also introduces main.cf and master.cf support for the <=level, " which matches an empty sender address, and the "@@domain" wildcard pattern. More information about those can be found in the postconf(5) manpage. Example: /etc/postfix/main.cf: # Allow root and postfix full control, anyone else can only # send mail as themselves. Use "uid:" followed by the numerical # UID when the UID has no entry in the UNIX password file. local_login_sender_maps = inline:{ { root = *}, { postfix = * } }, pcre:/etc/postfix/login_senders /etc/postfix/login_senders: # Allow both the bare username and the user@@domain forms. /(.+)/ $1 $1@@example.com Major changes - order of relay and recipient restrictions --------------------------------------------------------- [Incompat 20210131] With smtpd_relay_before_recipient_restrictions=yes, the Postfix SMTP server will evaluate smtpd_relay_restrictions before smtpd_recipient_restrictions. This is the default behavior with compatibility_level >= 3.6. This change makes the implemented behavior consistent with existing documentation. There is a backwards-compatibility warning that allows users to freeze historical behavior. See COMPATIBILITY_README for details. Major changes - respectful logging ---------------------------------- [Feature 20210220] Postfix version 3.6 deprecates terminology that implies white is better than black. Instead, Postfix prefers 'allowlist', 'denylist', and variations on those words. This change affects Postfix documentation, and postscreen parameters and logging. To keep the old postscreen logging set "respectful_logging = no" in main.cf. Noel Jones assisted with the initial transition. Changes in documentation ------------------------ Postfix documentation was updated to use 'allowlist', 'denylist', etc. These documentation changes do not affect Postfix behavior. Changes in parameter names -------------------------- The following postscreen parameters replace names that contain 'blacklist' or 'whitelist': postscreen_allowlist_interfaces postscreen_denylist_action postscreen_dnsbl_allowlist_threshold These new parameters have backwards-compatible default settings that support the old parameter names, so that the name change should not affect Postfix behavior. This means that existing management tools that use the old parameter names should keep working as before. This compatibility safety net may break when some management tools use the new parameter names, and some use the old names, such that different tools will disagree on how Postfix works. Changes in logging ------------------ The following logging replaces forms that contain 'blacklist' or 'whitelist': postfix/postscreen[pid]: ALLOWLIST VETO [address]:port postfix/postscreen[pid]: ALLOWLISTED [address]:port postfix/postscreen[pid]: DENYLISTED [address]:port To avoid breaking logfile analysis tools, Postfix keeps logging the old forms by default, as long as the compatibility_level parameter setting is less than 3.6, and the respectful_logging parameter is not explicitly configured. As a reminder, Postfix will log the following: postfix/postscreen[pid]: Using backwards-compatible default setting respectful_logging=no for client [address]:port To keep logging the old form, make the setting "respectful_logging = no" permanent in main.cf, for example: # postconf "respectful_logging = no" # postfix reload To stop the reminder, configure the respectful_logging parameter to "yes" or "no", or configure "compatibility_level = 3.6". Major changes - threaded bounces -------------------------------- [Feature 20201205] Support for threaded bounces. This allows mail readers to present a non-delivery, delayed delivery, or successful delivery notification in the same email thread as the original message. Unfortunately, this also makes it easy for users to mistakenly delete the whole email thread (all related messages), instead of deleting only the delivery status notification. To enable, specify "enable_threaded_bounces = yes". Other changes - smtpd_sasl_mechanism_list ----------------------------------------- [Feature 20200906] The smtpd_sasl_mechanism_list parameter (default: !external, static:rest) prevents confusing errors when a SASL backend announces EXTERNAL support which Postfix does not support. Other changes - delivery logging -------------------------------- [Incompat 20200531] Postfix delivery agents now log an explicit record when delegating delivery to a different Postfix delivery agent. For example, with "best_mx_transport = local", an SMTP delivery agent will now log when a recipient will be delivered locally. This makes the delegating delivery agent visible, where it would otherwise have remained invisible, which would complicate troubleshooting. postfix/smtp[pid]: queueid: passing to transport=local This will usually be followed by logging for an actual delivery: postfix/local[pid]: queueid: to=, relay=local, ... Other examples: the local delivery agent will log a record that it defers mailbox delivery through mailbox_transport or through fallback_transport. Other changes - error logging ----------------------------- [Incompat 20200531] Postfix programs will now log "Application error" instead of "Success" or "Unknown error: 0" when an operation fails with errno == 0, i.e., the error originates from non-kernel code. Other changes - dns lookups --------------------------- [Feature 20200509] The threadsafe resolver API (res_nxxx() calls) is now the default, not because the API is threadsafe, but because this is the API where new features are being added. To build old style, build with: make makefiles CCARGS="-DNO_RES_NCALLS..." This is the default for systems that are known not to support the threadsafe resolver API. @ text @d203 2 a204 2 If you have such clients then you can exclude their Message-ID strings with the two "Message-ID:.* : Recipient address rejected: User unknown; from=<> to= proto=ESMTP helo= What you see are lots of "user unknown" errors with "from=<>". These are error reports from MAILER-DAEMONs elsewhere on the Internet. HHooww ddoo II bblloocckk bbaacckkssccaatttteerr mmaaiill ttoo rraannddoomm rreecciippiieenntt aaddddrreesssseess?? If your machine receives backscatter mail to random addresses, configure Postfix to reject all mail for non-existent recipients as described in the LOCAL_RECIPIENT_README and STANDARD_CONFIGURATION_README documentation. If your machine runs Postfix 2.0 and earlier, disable the "pause before reject" feature in the SMTP server. If your system is under stress then it should not waste time. /etc/postfix/main.cf: # Not needed with Postfix 2.1 and later. smtpd_error_sleep_time = 0 # Not needed with Postfix 2.4 and later. unknown_local_recipient_reject_code = 550 HHooww ddoo II bblloocckk bbaacckkssccaatttteerr mmaaiill ttoo rreeaall rreecciippiieenntt aaddddrreesssseess?? When backscatter mail passes the "unknown recipient" barrier, there still is no need to despair. Many mail systems are kind enough to attach the message headers of the undeliverable mail in the non-delivery notification. These message headers contain information that you can use to recognize and block forged mail. BBlloocckkiinngg bbaacckkssccaatttteerr mmaaiill wwiitthh ffoorrggeedd mmaaiill sseerrvveerr iinnffoorrmmaattiioonn Although my email address is "wietse@@porcupine.org", all my mail systems announce themselves with the SMTP HELO command as "hostname.porcupine.org". Thus, if returned mail has a Received: message header like this: Received: from porcupine.org ... Then I know that this is almost certainly forged mail (almost; see next section for the fly in the ointment). Mail that is really sent by my systems looks like this: Received: from hostname.porcupine.org ... For the same reason the following message headers are very likely to be the result of forgery: Received: from host.example.com ([1.2.3.4] helo=porcupine.org) ... Received: from [1.2.3.4] (port=12345 helo=porcupine.org) ... Received: from host.example.com (HELO porcupine.org) ... Received: from host.example.com (EHLO porcupine.org) ... Some forgeries show up in the way that a mail server reports itself in Received: message headers. Keeping in mind that all my systems have a mail server name of hostname.porcupine.org, the following is definitely a forgery: Received: by porcupine.org ... Received: from host.example.com ( ... ) by porcupine.org ... Another frequent sign of forgery is the Message-ID: header. My systems produce a Message-ID: of . The following are forgeries, especially the first one: Message-ID: <1cb479435d8eb9.2beb1.qmail@@porcupine.org> Message-ID: To block such backscatter I use header_checks and body_checks patterns like this: /etc/postfix/main.cf: header_checks = pcre:/etc/postfix/header_checks body_checks = pcre:/etc/postfix/body_checks /etc/postfix/header_checks: if /^Received:/ /^Received: +from +(porcupine\.org) +/ reject forged client name in Received: header: $1 /^Received: +from +[^ ]+ +\(([^ ]+ +[he]+lo=|[he]+lo +) (porcupine\.org)\)/ reject forged client name in Received: header: $2 /^Received:.* +by +(porcupine\.org)\b/ reject forged mail server name in Received: header: $1 endif /^Message-ID:.* ]*Received:/ /^[> ]*Received: +from +(porcupine\.org) / reject forged client name in Received: header: $1 /^[> ]*Received: +from +[^ ]+ +\(([^ ]+ +[he]+lo=|[he]+lo +) (porcupine\.org)\)/ reject forged client name in Received: header: $2 /^[> ]*Received:.* +by +(porcupine\.org)\b/ reject forged mail server name in Received: header: $1 endif /^[> ]*Message-ID:.* ]*Message-ID:.*@@(porcupine\.org)/ reject forged domain name in Message-ID: header: $1 Notes: * The example uses pcre: tables mainly for speed; with minor modifications, you can use regexp: tables as explained below. * The example is simplified for educational purposes. In reality my patterns list multiple domain names, as "(domain|domain|...)". * The "\." matches "." literally. Without the "\", the "." would match any character. * The "\(" and "\)" match "(" and ")" literally. Without the "\", the "(" and ")" would be grouping operators. * The "\b" is used here to match the end of a word. If you use regexp: tables, specify "[[:>:]]" (on some systems you should specify "\>" instead; for details see your system documentation). * The "if /pattern/" and "endif" eliminate unnecessary matching attempts. DO NOT indent lines starting with /pattern/ between the "if" and "endif"! * The two "Message-ID:.* where example.com is the domain name part of the email address specified in Outlook's account settings for the user. Since many users configure their email addresses as username@@example.com, messages with DSN turned on will trigger the REJECT action in the previous section. If you have such clients then you can to exclude their Message-ID strings with the two "Message-ID:.* ]*(From|Return-Path):.*\b(user@@domain\.tld)\b/ reject forged sender address in $1: header: $2 Notes: * The example uses pcre: tables mainly for speed; with minor modifications, you can use regexp: tables as explained below. * The example is simplified for educational purposes. In reality, my patterns list multiple email addresses as "(user1@@domain1\.tld|user2@@domain2\.tld)". * The two "\b" as used in "\b(user@@domain\.tld)\b" match the beginning and end of a word, respectively. If you use regexp: tables, specify "[[:<:]] and [[:>:]]" (on some systems you should specify "\< and \>" instead; for details see your system documentation). * The "\." matches "." literally. Without the "\", the "." would match any character. BBlloocckkiinngg bbaacckkssccaatttteerr mmaaiill wwiitthh ootthheerr ffoorrggeedd iinnffoorrmmaattiioonn Another sign of forgery can be found in the IP address that is recorded in Received: headers next to your HELO host or domain name. This information must be used with care, though. Some mail servers are behind a network address translator and never see the true client IP address. BBlloocckkiinngg bbaacckkssccaatttteerr mmaaiill ffrroomm vviirruuss ssccaannnneerrss With all the easily recognizable forgeries eliminated, there is one category of backscatter mail that remains, and that is notifications from virus scanner software. Unfortunately, some virus scanning software doesn't know that viruses forge sender addresses. To make matters worse, the software also doesn't know how to report a mail delivery problem, so that we cannot use the above techniques to recognize forgeries. Recognizing virus scanner mail is an error prone process, because there is a lot of variation in report formats. The following is only a small example of message header patterns. For a large collection of header and body patterns that recognize virus notification email, see http://www.dkuug.dk/keld/virus/ or http://www.t29.dk/antiantivirus.txt. /etc/postfix/header_checks: /^Subject: *Your email contains VIRUSES/ DISCARD virus notification /^Content-Disposition:.*VIRUS1_DETECTED_AND_REMOVED/ DISCARD virus notification /^Content-Disposition:.*VirusWarning.txt/ DISCARD virus notification Note: these documents haven't been updated since 2004, so they are useful only as a starting point. A plea to virus or spam scanner operators: please do not make the problem worse by sending return mail to forged sender addresses. You're only harassing innocent people. If you must return mail to the purported sender, please return the full message headers, so that the sender can filter out the obvious forgeries. @ 1.1.1.1.2.1 log @file BACKSCATTER_README was added on branch netbsd-5 on 2009-09-15 06:02:06 +0000 @ text @d1 277 @ 1.1.1.1.2.2 log @Apply patch (requested by tron in ticket #944): Update Postfix to 2.6.5. @ text @a0 277 PPoossttffiixx BBaacckkssccaatttteerr HHoowwttoo ------------------------------------------------------------------------------- OOvveerrvviieeww This document describes features that require Postfix version 2.0 or later. Topics covered in this document: * What is backscatter mail? * How do I block backscatter mail to random recipient addresses? * How do I block backscatter mail to real recipient addresses? o Blocking backscatter mail with forged mail server information o Blocking backscatter mail with forged sender information o Blocking backscatter mail with other forged information o Blocking backscatter mail from virus scanners The examples use Perl Compatible Regular Expressions (Postfix pcre: tables), but also provide a translation to POSIX regular expressions (Postfix regexp: tables). PCRE is preferred primarily because the implementation is often faster. WWhhaatt iiss bbaacckkssccaatttteerr mmaaiill?? When a spammer or worm sends mail with forged sender addresses, innocent sites are flooded with undeliverable mail notifications. This is called backscatter mail. With Postfix, you know that you're a backscatter victim when your logfile goes on and on like this: Dec 4 04:30:09 hostname postfix/smtpd[58549]: NOQUEUE: reject: RCPT from xxxxxxx[x.x.x.x]: 550 5.1.1 : Recipient address rejected: User unknown; from=<> to= proto=ESMTP helo= What you see are lots of "user unknown" errors with "from=<>". These are error reports from MAILER-DAEMONs elsewhere on the Internet. HHooww ddoo II bblloocckk bbaacckkssccaatttteerr mmaaiill ttoo rraannddoomm rreecciippiieenntt aaddddrreesssseess?? If your machine receives backscatter mail to random addresses, configure Postfix to reject all mail for non-existent recipients as described in the LOCAL_RECIPIENT_README and STANDARD_CONFIGURATION_README documentation. If your machine runs Postfix 2.0 and earlier, disable the "pause before reject" feature in the SMTP server. If your system is under stress then it should not waste time. /etc/postfix/main.cf: # Not needed with Postfix 2.1 and later. smtpd_error_sleep_time = 0 # Not needed with Postfix 2.4 and later. unknown_local_recipient_reject_code = 550 HHooww ddoo II bblloocckk bbaacckkssccaatttteerr mmaaiill ttoo rreeaall rreecciippiieenntt aaddddrreesssseess?? When backscatter mail passes the "unknown recipient" barrier, there still is no need to despair. Many mail systems are kind enough to attach the message headers of the undeliverable mail in the non-delivery notification. These message headers contain information that you can use to recognize and block forged mail. BBlloocckkiinngg bbaacckkssccaatttteerr mmaaiill wwiitthh ffoorrggeedd mmaaiill sseerrvveerr iinnffoorrmmaattiioonn Although my email address is "wietse@@porcupine.org", all my mail systems announce themselves with the SMTP HELO command as "hostname.porcupine.org". Thus, if returned mail has a Received: message header like this: Received: from porcupine.org ... Then I know that this is almost certainly forged mail (almost; see next section for the fly in the ointment). Mail that is really sent by my systems looks like this: Received: from hostname.porcupine.org ... For the same reason the following message headers are very likely to be the result of forgery: Received: from host.example.com ([1.2.3.4] helo=porcupine.org) ... Received: from [1.2.3.4] (port=12345 helo=porcupine.org) ... Received: from host.example.com (HELO porcupine.org) ... Received: from host.example.com (EHLO porcupine.org) ... Some forgeries show up in the way that a mail server reports itself in Received: message headers. Keeping in mind that all my systems have a mail server name of hostname.porcupine.org, the following is definitely a forgery: Received: by porcupine.org ... Received: from host.example.com ( ... ) by porcupine.org ... Another frequent sign of forgery is the Message-ID: header. My systems produce a Message-ID: of . The following are forgeries, especially the first one: Message-ID: <1cb479435d8eb9.2beb1.qmail@@porcupine.org> Message-ID: To block such backscatter I use header_checks and body_checks patterns like this: /etc/postfix/main.cf: header_checks = pcre:/etc/postfix/header_checks body_checks = pcre:/etc/postfix/body_checks /etc/postfix/header_checks: if /^Received:/ /^Received: +from +(porcupine\.org) +/ reject forged client name in Received: header: $1 /^Received: +from +[^ ]+ +\(([^ ]+ +[he]+lo=|[he]+lo +) (porcupine\.org)\)/ reject forged client name in Received: header: $2 /^Received:.* +by +(porcupine\.org)\b/ reject forged mail server name in Received: header: $1 endif /^Message-ID:.* ]*Received:/ /^[> ]*Received: +from +(porcupine\.org) / reject forged client name in Received: header: $1 /^[> ]*Received: +from +[^ ]+ +\(([^ ]+ +[he]+lo=|[he]+lo +) (porcupine\.org)\)/ reject forged client name in Received: header: $2 /^[> ]*Received:.* +by +(porcupine\.org)\b/ reject forged mail server name in Received: header: $1 endif /^[> ]*Message-ID:.* ]*Message-ID:.*@@(porcupine\.org)/ reject forged domain name in Message-ID: header: $1 Notes: * The example uses pcre: tables mainly for speed; with minor modifications, you can use regexp: tables as explained below. * The example is simplified for educational purposes. In reality my patterns list multiple domain names, as "(domain|domain|...)". * The "\." matches "." literally. Without the "\", the "." would match any character. * The "\(" and "\)" match "(" and ")" literally. Without the "\", the "(" and ")" would be grouping operators. * The "\b" is used here to match the end of a word. If you use regexp: tables, specify "[[:>:]]" (on some systems you should specify "\>" instead; for details see your system documentation). * The "if /pattern/" and "endif" eliminate unnecessary matching attempts. DO NOT indent lines starting with /pattern/ between the "if" and "endif"! * The two "Message-ID:.* where example.com is the domain name part of the email address specified in Outlook's account settings for the user. Since many users configure their email addresses as username@@example.com, messages with DSN turned on will trigger the REJECT action in the previous section. If you have such clients then you can to exclude their Message-ID strings with the two "Message-ID:.* ]*(From|Return-Path):.*\b(user@@domain\.tld)\b/ reject forged sender address in $1: header: $2 Notes: * The example uses pcre: tables mainly for speed; with minor modifications, you can use regexp: tables as explained below. * The example is simplified for educational purposes. In reality, my patterns list multiple email addresses as "(user1@@domain1\.tld|user2@@domain2\.tld)". * The two "\b" as used in "\b(user@@domain\.tld)\b" match the beginning and end of a word, respectively. If you use regexp: tables, specify "[[:<:]] and [[:>:]]" (on some systems you should specify "\< and \>" instead; for details see your system documentation). * The "\." matches "." literally. Without the "\", the "." would match any character. BBlloocckkiinngg bbaacckkssccaatttteerr mmaaiill wwiitthh ootthheerr ffoorrggeedd iinnffoorrmmaattiioonn Another sign of forgery can be found in the IP address that is recorded in Received: headers next to your HELO host or domain name. This information must be used with care, though. Some mail servers are behind a network address translator and never see the true client IP address. BBlloocckkiinngg bbaacckkssccaatttteerr mmaaiill ffrroomm vviirruuss ssccaannnneerrss With all the easily recognizable forgeries eliminated, there is one category of backscatter mail that remains, and that is notifications from virus scanner software. Unfortunately, some virus scanning software doesn't know that viruses forge sender addresses. To make matters worse, the software also doesn't know how to report a mail delivery problem, so that we cannot use the above techniques to recognize forgeries. Recognizing virus scanner mail is an error prone process, because there is a lot of variation in report formats. The following is only a small example of message header patterns. For a large collection of header and body patterns that recognize virus notification email, see http://www.dkuug.dk/keld/virus/ or http://www.t29.dk/antiantivirus.txt. /etc/postfix/header_checks: /^Subject: *Your email contains VIRUSES/ DISCARD virus notification /^Content-Disposition:.*VIRUS1_DETECTED_AND_REMOVED/ DISCARD virus notification /^Content-Disposition:.*VirusWarning.txt/ DISCARD virus notification Note: these documents haven't been updated since 2004, so they are useful only as a starting point. A plea to virus or spam scanner operators: please do not make the problem worse by sending return mail to forged sender addresses. You're only harassing innocent people. If you must return mail to the purported sender, please return the full message headers, so that the sender can filter out the obvious forgeries. @