Currently, every time haproxy checks if postfix is still alive, e.g. on port
587, I see this in my logging:
Jan 28 13:13:20 albus submission/smtpd[97331]: warning: haproxy read: EOF
Jan 28 13:13:20 albus submission/smtpd[97331]: connect from unknown[unknown]
Jan 28 13:13:20 albus submission/smtpd[97331]: disconnect from unknown[unknown]
commands=0/0
I just tell rsyslog to ignore those lines so they don't get logged.
if $programname == "postfix" and $msg startswith "warning: haproxy read: "
then stop
if $programname == "postfix" and $msg contains " from unknown[unknown]"
then stop
if $programname == "postfix" and $msg contains " from proxy.example.com["
then stop
