Postfix stable release 3.4.5 and legacy releases 3.3.4, 3.2.9, and 3.1.12

[An on-line version of this announcement will be available at]

This update fixes 5+ year old bugs, and provides a Postfix 3.4 fix for sites that depend on undocumented behavior.

Changes for all supported stable releases:

Changes for Postfix 3.4:

Changes for Postfix 3.3, 3.2, 3.1, already part of Postfix 3.4:

You can find the updated Postfix source code at the mirrors listed at