Hello,

I would rather not have Xeams in Proxy mode reply to an invalid user with the response:

550 No such user here - AD

Can it be modified to simply say something like the Cisco Ironport::

550 #5.1.0 Address rejected.

In my opinion it will offer less incentive to hunt for AD accounts and providing the least amount of information possible is a better security alternative.

FYI, I have already hidden the header response for the Xeams version in the 220 response for the same reason:

220 mail.********.com - Version info hidden due to policy

Thanks in advance
Jason