Postfix not honoring mx
David
david at daku.org
Thu Nov 10 22:22:35 UTC 2022
Folks
I'm running Ubuntu server 22.04, with Postfix 3.13-0ubuntu1.2. I
notice in the logs (mail.log) that when sending mail it is trying to
connect to the target server, not its mail server. For example, mail
addressed to
some-name at sonic.net
produces the error message in the log:
Nov 10 15:05:46 xxxxx postfix/smtp[1772824]: 1FBAA8C0518:
to=<some-name at sonic.net>, relay=none, delay=30,
delays=0.03/0.02/30/0, dsn=4.4.1, status=deferred (connect to
sonic.net[209.204.190.64]:25: Connection timed out)
The 209 address is the address of 'sonic.net', but the MX record, as
revealed by the command "host -t mx sonic.net" is:
sonic.net mail is handled by 10 mailin-02.mx.sonic.net.
sonic.net mail is handled by 10 mailin-01.mx.sonic.net.
whose IP addresses are in the range 157.131.224.(68-73).
What configuration option should I suspect?
Thanks
David
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