I have 700 users in domain A and we need to move all users to domain B. Domain B wont have an Exchange server installed for 4 months. My question is if we have the 700 users log into
the new domain then how do we get autodiscover to work? I created an identical user account in the new domain B but when I try and link the mailbox it comes back and fails and states object already exists?
How can I have all 700 users log into domain B but continue to use Exchange resources from domain A?