I have a question about hosting an Exchange Server off-site. We are planning on having a data center host our exchange server remotely. Will this create any problems? I am aware that Exchange 2007 connects with AD for user information and other stuff. Is this possible with a VPN connection between the remote site and our AD Site? I've read about remote edge transport servers, but never all roles of exchange 2007. We'll probably just use the basic roles like CAS, HUB, and MB.