We have 2 Exchange 2010 servers. Hub Transport/Mailbox server is at our local office. CAS server is at a remote data center. It is all one AD site and all domain controller/DNS servers are in the local office.
We are now adding a domain controller with DNS to the remote data center with the CAS. This new domain controller will also be the DC for the new AD site that will represent the data center location.
What needs to be done to make sure adding a new AD site doesn't negatively affect Exchange?
IP addresses are not changing. Is there any problem with the CAS being in a different AD site than the mailbox/hub transport server?