Bizarre sendmail gets wrong MX value!!

From: Peter Stokes (peter@ashlyn.co.uk)
Date: Wed Aug 27 2003 - 13:06:00 EDT


Hi All

Hope you can help me with this one as it makes no sense to me

I two systems which I loaded and should have the same version of 2.6
installed (they were loaded 1+ years ago and have differing packages
loaded). I have setup both to simply send mail out without using a
mailhub (sendmail.cf.new in /etc/mail).

One system works no problem, the other appears after comparing sendmail
debug options to NOT pickup the MX record for the domain it is sending
to correctly and I think picks up the A record instead, because it tries
to send the mail to the webserver of the domain instead of the
mailserver for the domain and hence gets a reject from the mailer on the
webserver.

Now both machines are running the same sendmail.cf (V8.8.8+Sun version
sendmail) and both are on the same subnet.

When I run the -d8.8 with sendmail I get no MX info from the failing
one, only on the working one.

Any clues where to look as I guess it is some sort of library issue?

Thanks

Peter
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