Postfix Source Code

Postfix was released under the IBM Public License. All Postfix source code is signed with Wietse's PGP key.

Official release

Official releases do not change except for bugfixes and for portability fixes. New features are tested out in experimental releases (see below).

Postfix Version 2.0 Patchlevel 16 Source code | PGP signature | Release notes | Change log
This version is supposed to be compatible with PCRE version 2.08 and with PCRE version 3.7
Patch to black-list domain names by their mail servers (such as Verisign's mail sink) or by their DNS servers (second revision: don't defer mail when DNS lookup fails; lookup grandparent NS records).

Official releases are called "Postfix a.b.c", where a is the major release number, b is the minor release number, and c is patchlevel. Older official releases were called "Postfix yyyymmdd" where yyyymmdd is the release date.

Source code changes since Postfix Version 2.0.0.

Postfix Version 2.0 Patch 16 | 15 | 14 | 13 | 12 | 11 | 10 | 09 | 08 | 07 | 06 | 05 | 04 | 03 | 02 | 01

Experimental release

New features are tested in experimental releases. They become part of the next official release once the code has not changed for a significant amount of time. Although this code is still subject to change, it runs on all of Wietse's systems so it is production quality.

Postfix Snapshot 20030921 Source code | PGP signature | Release notes | Change log
This version is supposed to be compatible with PCRE version 2.08 and with PCRE version 3.7

Experimental releases are called "Postfix a.b.c-yyyymmdd", where a.b.c is the nearest official Postfix release and yyyymmdd is the release date. Older experimental releases were called "Snapshot yyyymmdd".

Postfix countermeasures for CERT advisory CA-2003-12

See the file CA-2003-12.txt for countermeasures that can be implemented with Postfix to protect downstream Sendmail systems. This information applies to any Postfix version all the way back to the first public release.

Postfix countermeasures for CERT advisory CA-2003-07

The following patches are derived from Postfix 2.0.6, which implements a similar fix as Sendmail 8.12.8 to protect downstream Sendmail systems.

Postfix 1.1.12 Patch | PGP signature
Postfix 20010228-pl08 Patch | PGP signature

Past official releases

Version 1.1 Patchlevel 13 Source code | PGP signature |Patch 13
- patch 13 (August 2003) fixes CAN-2003-0540
- patch 12 (November 2002) fixes CAN-2003-0468
Version 1.0 Patchlevel 08 Source code | PGP signature (released as version 20010228)
Version 19991231 Patchlevel 13 Source code | PGP signature
Version 19990906 Patchlevel 09 Source code | PGP signature