I have a scenario where I want to migrate Exchange 2003 to an Exchange 2007 SP 1 CCR. There is also a requirement for mailbox servers on remote sites to limit the amount of traffic traversing the link.
Am I right in saying that I need a 2003+SP2 DC & GC, Hub transport server, and a mailbox server on the remote sites?
They will also be using OWA. The A record will point to the HQ so will the client access server in be able to access mailboxes in the remote sites?