Postfix 2.5.0 stable release available

Postfix stable release 2.5.0 is available. After Postfix was declared
"complete" with version 2.3, the focus is shifting towards improving
the code and updating it for changing environments.

- TLS (SSL) support was streamlined further, and provides a new
  security level based on certificate fingerprints instead of CA
  signatures. See TLS_README for details.

- Milter support was updated from the Sendmail 8.13 feature set and
  now includes most of the features that were introduced with
  Sendmail 8.14. See MILTER_README for details.

- Stress-adaptive configuration was introduced. This allows the
  Postfix SMTP server to temporarily adjust its rules under conditions
  of overload, such as a malware attack or backscatter flood. See
  STRESS_README for details.

- The queue manager scheduler was refined. It now provides per-transport
  scheduling controls and allows for adjustment of the sensitivity
  to mail delivery (non-)errors. See SCHEDULER_README.

- Security was improved by introducing a Postfix-owned data_directory
  for storage of randomness, caches and other non-queue data. This
  change avoids future security loopholes due to untrusted data
  sitting in root-owned files or in root-owned directories. Writes
  to legacy files in root-owned directories are automatically
  redirected to files in the new data_directory.

No functionality has been removed, but it is a good idea to review
the RELEASE_NOTES file for the usual minor incompatibilities or
limitations.

You can find Postfix version 2.5.0 on the mirror sites listed at
http://www.postfix.org/

Updated versions of Postfix version 2.4 (and perhaps 2.3) will be
released with the same fixes that were already included with versions
2.5 and 2.6.

	Wietse