I have a 2003 domain with single exchange 2000 server. After running forestprep and domainprep, I installed a new 2003 server with exchange 2003. When I move a user to the new 2003 server, they are able to send email but not receive any. Also none of the public folders are available to users on the new server. I am not planning on moving everyone to the 2k3 server so I need users on either version to be able to send/receive and have access to public folders. I have added both servers to the replica's on each public folder but nothing seems to be working. Any documentation, links, or help will be greatly appreciated.