postfix update

[John Dennis]

postfix-2.0.16-1 was added as id #17 to the fedora update list, this was
to fix: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=108960

There has been some limited testing by users reporting the bug who
report success, but additional testing would be prudent. The fundamental
change was to move from the .14 to .16 minor upstream rev to pick up an
upstream bug fix.
-- 
John Dennis <jdennis at redhat.com>