I have the following scenario of active directory and my company split process
AD with all DC's under 2003 sp1
Domain1 (forest root)
I'm the admin of Domain10, my company which uses Domain10, was sold, so we need to split our part from the other domains, shutdown the wan links connected to the other companys, and so on.
Actually we agreed with the head quarters to keep a domain controller of Domain1 (forest root), an of course or Domain10 DC's, we plan to cut network comunications forever and seize de fsmo roles to our DC of domain1 in order to not loose the root. I'm asumming that this should not cause any trouble, i'm correct?
But my doubts are with exchange 2003, we use a single exchange organization, connected through routing groups connectors, all exchange servers are exchange 2003 servers running in all the 10 domains, except for the domain1 (forest root), which has no exchange or users on it, i need advice on how to cleanup my active directory and exchange after the split, in order to keep unafected the email flow to the other domains, which of course should be contacted as external e-mail domains by my exchange server, instead of intra-organization domains, i wonder if after the cleanup of the rest of orphaned domains it's enough, please giveme some advice on which steps to follow, or if you have some better strategies, of course or main concern is to minimize impact on the users, feel free to ask any other tech details.
thanks in advance for your feedback