juan smitt: > Hi, > > > The clients are very sensitive to the mail service's response time (we > can't do anything with that).
I suggest that you look at the delays= logging. This breaks down the time that a message spends inside Postfix. https://www.postfix.org/postconf.5.html#delay_logging_resolution_limit The format of the "delays=a/b/c/d" logging is as follows: a = time from message arrival to last active queue entry b = time from last active queue entry to connection setup c = time in connection setup, including DNS, EHLO and STARTTLS d = time in message transmission Wietse
