Current versions in portage are 2.3.8 and 2.4.5.
--8<--
Postfix stable release 2.4.6 etc. fix minor problems in the SMTP
client, and work around "noatime" mail queues. Note: stable releases
do not change except for bugfixes and emergencies. New features are
introduced via the experimental release (currently, Postfix 2.5).
- A remote SMTP client TLS certificate with an unparsable canonical
name triggered a panic error in the Postfix SMTP server (attempt
to allocate zero-length memory) while sending a request to an
SMTPD policy server.
- On backup MX servers where the queue file system is mounted with
"atime" (file read/execute access time) updates disabled, the
flush daemon would trigger mail delivery attempts once every 1000
seconds, thus rendering the maximal_backoff_time setting useless
for backup MX service.
--8<--
(2.3.8 => 2.3.13 has even more interesting changes)
