I currently have (Active Directory) a.domain and b.domain. I have a.domain and b.domain email addresses. a.domain has its own DCs (IP range 192.168.1.x) and b.domain has its own DCs plus 07 exchange server (IP range 192.168.16.x) Between the two locations I have a 3 meg VPN pipe with 90 ms ping times. I have 1 Default-First-Site-Name in Active Directory Sites and Services which both domains are assigned.
I want to move each domain to its own Site in AD Sites and Services so at each site users will authenticate with the appropriate DCs. In addition, I want emails to be submitted correctly to the 07 Exchange Server located in a.domain (192.168.1.x). Both domains are at 2003 level.