Postfix stable release 3.1.0

[An on-line version of this announcement will be available at http://www.postfix.org/announcements/postfix-3.1.0.html]

Postfix stable release 3.1.0 is available. This release ends support for legacy release Postfix 2.9.

The main changes in no particular order are:

For details, see the RELEASE_NOTES file.

You can find the updated Postfix source code at the mirrors listed at http://www.postfix.org/.