I've got a Windows 2000 child domain with Exchange 2000. I'm planning to replace the systems and join them to a new Windows 2003 domain (same forest) with Exchange 2003 (different Administrative Group).
My plan is to migrate the accounts from the Win2000 domain to the Win2003 domain using ADMT and then migrate accounts from the Exchange 2000 server to the Exchange 2003 server. Am I going to run into any unexpected issues with this? I know in Exchange 2000 there were issues migrating users from one Administrative Group to another, with this affect me? I'm trying to avoid using Exmerge and deleteing/recreating accounts. We've got a very large distributed network with slow links and I'd like to avoid email outages.