I'm looking for a general approach from folks who have a similar experience. The goal is to disconnect or de-couple two child domains and their Exchange servers from the parent corp due to selling off of the child businesses. Let's assume 2003 AD and Exchange running native mode for domain, forest and Exchange. The two child domains want to be rejoined to a common forest and will be considered the same business with two separate domains. Let's assume a couple of hundred seats per domain.
What comes to mind immediately is that by disconnecting from the forest, you'll lose the forest FSMO roles. I guess I'll need those again... So I was thinking that I could build a new third domain and declare it the first domain in a new forest, then join the two other child domains to this new forest. Also, since the Exchange servers weren't the first in the organization, I'll lose the Offline Address Book folder, the Schedule+ Free Busy folder, the Events Root folder, and other folders as described in http://support.microsoft.com/kb/822931
. What to do there?
Since this scenario isn't yet in play, I'm looking more for a general "this is how I'd approach it" and "you may run into this..." sort of reply as opposed to questions about what the specifics of the scenario are, because I don't know yet. Your expertise is always appreciated. Thanks!