I'm trying to find why postfix rejected the incoming mail the line from mail.log is:
NOQUEUE: reject: RCPT from unknown[xxx.xxx.xxx.1]: 450 4.7.1 Client host rejected: cannot find your hostname, [xxx.xxx.xxx.1]; from=<some@email.address> to=<another@email.address> proto=ESMTP helo=<yyy.yyy.yyy.yyy>
host yyy.yyy.yyy.yyy returns:
yyy.yyy.yyy.yyy has address xxx.xxx.xxx.2
Does postfix reject incoming email because of different IPs ( xxx.xxx.xxx.1 vs xxx.xxx.xxx.2) ?
Many thanks