Wierd DNS like issue...
Posted on 2006-06-16
I have several messages in my Exchange Server 2003 queue. A lot of them have wierd messages like:
Connection was dropped by remote host
I've determined for some we're being blacklisted. Ok that's fine. Figured that one out.
But one is really strange.
Since it's not my domain in question I'll put it out there. It's public info anyway.
thecolumbiabank.com the nslookup MX record reports: name class type data time to live
clb-mail2.thecolumbiabank.com IN A 22.214.171.124 77316s (21h 28m 36s
However when I do a message tracking on the message destined for thecolumbiabank.com our Exchange server reports
it's trying to deliver to:
name class type data time to live
clb-mail12.thecolumbiabank.com IN A 126.96.36.199 77316s (21h 28m 36s
NOTICE THE HOSTNAME DOESNT MATCH. WHEN I VERIFY THE MX RECORD THROUGH THE DNS CONFIGURED ON THE SERVER I GET THE FIRST ONE. clb-mail2 188.8.131.52
So where is my exchange server getting this other server information from which is why it can't deliver the message.
I suspect this is the case with various email servers which is why my queue is growing.