I have posted this before, thinking I have some sort of dns problem
my public mail server logs this sometimes
sendmail[246758]: 38G6ZP06246744: SYSERR(root): timeout writing message
to mail.example.com.
sendmail[246758]: 38G6ZP06246744: to=<
[email protected]>, delay=00:00:02, xdelay=00:00:01, mailer=esmtp, pri=304697, relay=mail.example.com.
[x.x.x.x], dsn=4.0.0, stat=Deferred: Name server: mail.example.com.:
host name lookup failure
and the local mail server logs these.
sendmail[29938]: 38G6ZTQv029938: collect: premature EOM: unexpected close sendmail[29938]: 38G6ZTQv029938: collect: unexpected close on connection
from xxxxxxx, sender=<xxxxxxxxx@xxxxxxxxxxx>
I managed to save this message and don't really know what to look for. Increasing logging also does not give anything useful.
sendmail-8.16.1-10.el9.x86_64
sendmail-8.14.7-6.el7.x86_64
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