Release Notes: This release fixes multiple problems with Milter support, and provides workarounds for SASL interoperability and loopback TCP performance problems.
Release Notes: Bugfixes
Release Notes: An issue with 2.4.2 not compiling correctly on all platforms was corrected.
Release Notes: Solaris compatibility has been improved. A segfault with the HOLD action on 64-bit platforms has been fixed. The "postfix stop" command has been improved on Linux platforms.
Release Notes: accept(2) has been fixed to work reliably on all FreeBSD versions. An incorrect error message in postdrop and a segfault with the HOLD action on 64-bit platforms have been fixed. The "postfix stop" command has been improved on Linux platforms.
Release Notes: Postfix can now manage thousands of connections without needing configuration or compile-time tweaks. Milter support for message body replacement has been added. Minor improvements in TLS session cache management and in the implementation of certificate fingerprint based authentication have been made. Improvements in queue manager performance when deferring large amounts of mail, or when delivering mail with lots of recipients have been made. Workarounds for SMTP servers that reply and hang up prematurely and for broken kernel lock management in POP servers have been added.
Release Notes: This release fixes minor problems and introduces one incompatibility.
Release Notes: This release fixes minor problems.
Release Notes: This release fixes one message corruption problem in the Milter client, and changes the appearance of bounce messages.
Release Notes: This release closes the remaining known defects with Postfix Milter support. A queue file could be corrupted after a request to modify a short message header, when that header was the last one in the message. Spurious Milter requests could lead to a panic when a client was rejected with "smtpd_delay_reject = no". The Milter client is now more tolerant for redundant "data cleanup" requests. This avoids panic() calls for harmless conditions.