Hi, I finally got to decommission our last 5.5 box yesterday. It's been a long time coming! The SRS server and all connection agreements are going to be removed next week as per http://technet.microsoft.com/en-us/library/bb124572(EXCHG.65).aspx I'm currently running Exchange 2003 SP2 and I'm are going to change the operational role to native mode as soon as the SRS is gone. I would like to move to Exchange 2010 in the next 6 months but I'm slightly worried about our setup.
I have approximately 4000 users, half of which are in a different forest to the Exchange server. In forest A (with Exchange) we have multiple child domains and in forest B a single domain. All users in forest B have had their user accounts migrated and disabled in a child domain in forest A. I've used the AD Clean tool to merge the ADC object with the migrated user object prior to disabling them. The enabled user account in forest B has "Associated External Account" rights on the migrated user's mailbox. Eventually all users will be logging on to forest A but this is proceeding quite slowly. Is anybody using Exchange 2010 with mailboxes in 1 forest and users in another? Were there any issues? Would I be better off running both (2003 and 2010) until all users are logging on with their migrated account? Regards, Patrick Patrick Nagle , IT Analyst, Enterprise Applications Group, Computer Centre, University College Cork, Cork, Ireland * + 353 (0) 21 4903217 * p.na...@ucc.ie
