We are trying something that is explained below - Expect help to explore and implement the same. All your assistances are appreciated.
Current: Single AD forest (A.com) - child domain (b.a.com) where exchange is installed. All these servers are geographically split into 6 locations. All DCs & Exchange servers are on Windows 2003 SP2. All Exchange servers are Exchange 2003 SP2. We have clusters for mailbox servers and NLB for fornt-end servers.
New setup: Current AD forest and exchange org remains same. But new AD forest will be created and new exchange org will be created under this new AD forest. There won't be any trust between these two AD forests. Our requirement is to move few department user's mailbox into this new AD forest and Exchange org. New setup will have Exchange 2007 on Windows 2003 64-bit.
1. Is this possible?
2. If we create temporary trust between these AD forests and break it later, what would be the effect?
3. Can we use ExMerge to export and import the mailboxes from one Org to another?
4. If we migrate our current environment to Exchange 2007, will it help to accomplish this task?
Your suggestions are highlt apprecitaed.