I have an 80 user Exchange 2003 environment - with a 2003 Domain - Exchange 2003 is on a 2003 Server that is a Domain Controller. We have a second Domain Controller that we cannot update to Server 2008 yet as the FAX software and hardware is not compatable with 2008 server yet. Option 1 - Bring in the 2008 SErver box as a DC with Exchange 2007 installed and then move over all mailboxes/organizaion from the 2003 exchange box and then bring down that box. Leave the Second DC as a 2003 Server until all hardware/software is supported for the upgrade.
Option 2 - Stay with Server 2003 Domain -- bring in Exchange on a 2008 Member Server box and bring up a second DC before we retire the old 2003 Server / Exchang BOX.
I would like to know what is the best method to move the domian to exchange 2007 and eventually 2008 Domain. We have two other member servers - one is a file server and one is a Citrix server.