I have two different domains, both have the same Admin ID/Password and I still can't get the migration tool to work on either systems to see each other. I can see each server and quickly share a drive without any validation of username or password. But when I try the migration tool, it doesn't allow me to "trust" each server. I am able to expoert from Outlook to a PST file and import once a user is part of the new domain, but this is very lengthy process. I was hoping to use a migration tool or just move some files.