we had an environment with a win2k domain controller and an exchange 2k server. we upgraded the domain controller to win2k3 and added an exchange 2k7 server. i thought we had everything moved over to the new exchange server but apparently not. it seems that when i try to add a new smtp address to a user, i get the error listed. looks like active directory is still looking for the old server. unfortunately that server is gone. how do i get AD to look for the new server?