Postfix stable release 3.9.0

[An updated version of this announcement will be available at]

Postfix stable release 3.9.0 is available. Postfix 3.5 - 3.8 were updated earlier this week; after that, Postfix 3.5 will no longer be updated.

The main changes are below. See the RELEASE_NOTES file for further details.

Removed functionality:

Officially obsolete functionality:

Changed functionality:

New functionality:

Attack resistance:

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