Re: sendmail: NOQUEUE: Authentication-warning
On 2000-01-24 16:25:49, Christopher S. Swingley wrote:
> Jan 24 16:18:57 denali sendmail[17441]: NOQUEUE: Authentication-
> Warning: foo.bar.edu: Host bar.foo.edu [200.200.10.10] claimed
> to be bar
Looks like sendmail does a reverse dns lookup on a connecting host and
find that the IP doesn't match the hostname. It therefor suggest that
someone messing around (authentication warning). Are you controling
relay using domain or IPs?
Check hostnames against your dns records for the machines mentioned in
the log event.
/Allan
--
Allan M. Wind Email: wind@freewwweb.com
P.O. Box 2022 Phone: 781.279.4513 (home)
Woburn, MA 01888-0022 Phone: 781.274.7000 ext. 368 (work)
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