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Exchange 2000 sending from wrong server

By P. Dickason, CNE, MCSE, CCA ·
We are experiencing a problem where all of our outgoing email say they are comming from address 65.x.x.34. 65.x.x.34 is the natted address of our domain controller where the inside address is The exchange server is at 65.x.x.37 with the inside address of Exchange is only installed on the one server so we can't understand why the mail headers say 65.x.x.34. It should say 65.x.x.37 as we are experiencing lots of problems with people who use reverse lookups to block spam. Any ideas?

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by CG IT In reply to Exchange 2000 sending fro ...

here's a stab at this. try article 297412 not quite an answer but one part describes how host IP addresses are attached to mail

" When the preceding option is used, Exchange Server performs a DNS query to resolve the originating Internet Protocol (IP) address of the incoming messages to a host name. Then, the host name is attached to the headers of e-mail messages"

This article deals with spam and reverse DNS query so I thought it might help you in understand what goes on.

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by P. Dickason, CNE, MCSE, CCA In reply to

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