Postfix stable release 3.3.1, and legacy releases 3.2.6, 3.1.9, 3.0.13 for CentOS and RHEL 6,7

The latest Postfix releases are now available in my yum repos and include the following fixes.

Fixed in Postfix 3.3:
Postfix did not support running as a PID=1 process, which complicated Postfix deployment in containers. The "postfix start-fg" command will now run the Postfix master daemon as a PID=1 process if possible.

Segfault in the postconf(1) command after it could not open a Postfix database configuration file due to a file permission error (dereferencing a null pointer).