I have a Windows 2003 domain with an Exchange 2007 running on a Server 2008 setup. It works just fine for the main tree in the domain.
Now I need to add mailboxes for one of the other domains into the Exchange server. There is two-way trust between the forrestes, and I have prepared the domain with setup /preparedomain:contoso.com.
Still I cannot add change scope to the other domain, when I try to add User Mailboxes. It this impossible to do by design? Or am I taking the wrong path?