[GaryCutri]

Originally Posted by rantonio

I've gone back and made sure each step was followed. One problem I am running into is granting permissions for Send As under my mailbox name. I do this, but after a certain period of time the permissions are no longer there. So it seems as if they aren't taking. I've changed it multiple times, and I close everything and check it again and it is right. But after I come back later it is gone completely. Unrelated to that, my Server 2003 machine is also a domain controller, but I don't think that should cause any problems. I don't know why the security setting wouldnt stay.

I assume your account is a Domain Admin? If this is the case please follow my guide in the link below (step 3: dsacls):

Unlisted message error or Desktop email program unable to submit message