I just set up a 6.5.3 Server that coexists with an Exchange server in the domain. Therefore, I “thought” I set it up as user@abc.xyz.com, but it’s sending as user@xyz.com. Thst would be fine if I could get it to route to the domino server and not the exchange, but that’s a different issue.
Thanks for replying. I just fixed it a little while ago. It was actually my relay server stripping the address in sendmail. I had to reseet the masquerading in sendmail.mc.