From: Brian Collins (listbcnewnanutilities.org)
Date: Mon Nov 03 2003 - 08:02:54 CST

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Got a complaint from a customer this morning that our outbound SMTP server
was bouncing their mail to a certain domain (prairienet.net), saying it
looped back to itself. Well, we don't host that domain, so I dug a little
deeper. Here's what I found.

# dig prairienet.net mx
<<SNIP>>
;; QUESTION SECTION:
;prairienet.net. IN MX
;; ANSWER SECTION:
prairienet.net. 660 IN MX 10 nomx.ultsearch.com.
<<SNIP>>;; ADDITIONAL SECTION:
nomx.ultsearch.com. 354 IN A 127.0.0.2

Why would you DNS someone's MX record to a localhost address? It looks
intentional, given the 'nomx' hostname.

Can someone else try this so I can verify it's not just my DNS?

Thanks!
--B C

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