We currently have a single Windows 2008 R2 Active Directory domain controller, and an Exchange 2010 server. We are in the process of adding a child domain on a second Active Directory server for an offsite office location for a subdivision of our company. The two locations will be connected via VPN.
Currently users exist on the root domain with Exchange accounts who will be moving to the new offsite company/location. We would like to be able to move these user accounts to the child domain while maintaining their existing Exchange mailboxes and email addresses. Is this possible, and if so how would we do it?