Brendan Kearney: > i have postscreen and smtpd running on the same box as submission, and
Running postscreen for the submission service is not recommended. It should be used for MTA-to-MTA service only. The documentation even says so, threfore don't do it. > it seems i am missing something when trying to leverage proxy protocol. > > in my main.cf i have the lines: > smtpd_upstream_proxy_protocol = haproxy > ... > postscreen_upstream_proxy_protocol = haproxy smtpd_upstream_proxy_protocol is not needed when the haproxy handshake is already done in postscreen. > this seems to work, but after a while haproxy detects the services as > down, and i get the below message from submission in logs: > postscreen_upstream_proxy_protocol = haproxy What is the error message? Have you tried to look in the Postfix logs? See http://www.postfix.org/DEBUG_README.html#logging Wietse