We are In the process of building and setting up a new organization, with one AD forest with three trees (total of 4 DNS Namespaces and Domains).
We would like to use Exchange 2010 and implement DAG groups. I just have a few questions as it relates to this.
1) In terms of software, I believe each mailbox server has to be running the Enterprise version of Windows; is this accurate? We can still run the Standard version of Exchange?
2) In regards to the 4 DNS Namspaces and Domains we will have, how does this affect the DAG implementation? Can we host them all on one mailbox server in DomainA.com for instance or do we need 4 seperate mailbox servers for DomainA.com, B.com, C.dom and D.com ?