My company has two locations with two seperate Active Directory Forests. We had an exchange org that contained two administrative groups with mail that flowed from our exchange server (point of entry) in location A over MTA to exchange server at location b in the other administrative group. We added Exchange 2003 servers and left our 5.5 servers in place acting as a bridgehead to the one 5.5 server at our remote location. Also: everyone at both sites have the same email address. I had my connectors in place and felt that due to power issues in my server room that I would remove the old 5.5 servers after pointing the remote bridgehead server to my local bhs. After I removed the 5.5 servers at location A, I could no longer see site B in ESM. I have recently done a lot of post homework that should have been done first, because now I found out that Exchange 2003 has to be a seperate org for each forest. The reason this is so critical is now when I create a new user at location A in AD and create a mailbox, it will not get replicated to the site b. Nobody in site b can send email to new users in site A that were created after removing the 5.5 servers. Since I know that if company A purchases company B you can integrate exchange servers using a routing group connector, is there any hope of getting a 2003 server in site b (different domain) to talk to my exchange server at location A and receive mail at the same .com email address as lcation A?