Bugfix (introduced: Postfix 1.1): the postsuper command did not count a
successful rename operation after error recovery.

Bugfix (introduced: Postfix 3.1): cut-and-paste error in the "postfix
tls deploy-server-cert" command, causing the wrong certfile and keyfile
to be used.

Robustness: create a new keyfile when "postfix tls new-server-cert" is
invoked and main.cf specifies a non-existent keyfile.

Bugfix (introduced: Postfix 3.0): when receiving a MAIL FROM...SMTPUTF8
command while smtpd_delay_reject=no, enable SMTPUTF8 support before
processing smtpd_sender_restrictions.

Bugfix (introduced: Postfix 2.1.0): the Postfix SMTP daemon did not query
sender_canonical_maps when rejecting unknown senders with
"smtpd_reject_unlisted_recipient = yes" or with reject_unlisted_sender.