Hello guys, i need your confirmation on the following: * OS used in the below scenario is windows 2003 enterprise * Exchange used is a clustered exchange 2003 O.K here is my story: I'm having 3 forests Foret A +Exchange, Foret B +Exchange, Foret C +Exchange (different exchange Organizations serving different namespaces ex: @dom1.com, @anotherdom.com.uk, @differentdom.net) MY GOAL is: to unify the namespace by restructuring the AD hierarchy in three forests to be child from a new domain called Forest.com+ Exchange. so what i'm planning to do is as follow: (following will apply on each of the forests). 1- Backup system State for current DCs for Rollback Plan. 2- ASR Backup for clustered Exchange + Exchange Data Store for rollback plan. 3- Install the new Forest.com DC establish trust between each Forest and the new one. 4- use ADMT for users Migration to the new Forest.com (also profiles, SIDs, group memberships,...). 5- use GPMC for Group policy Migration to the new Forest.com. 6- rebuild the old DCs to be childs from the new domain. 7- Install a new Exchange Organization for the Forest.com empty Domain ( for each forest will be child from this empty domain). 8- use Exmerge & (Active Directory Cleanup wizard - if needed) to migrate users mailbox from the old exchange organization to the new one. 9- keep the old setup for couple of days or even a week to make sure that everything is ok and then remove the old exchange servers. 10- change firewall configurations to point to the new exchange server and open the required ports for the new exchange. 11- do i need to do any further configurations on the client side to redirect them to the new exchange?
