Was/is the old Exchange server a domain controller? If so, you will have to completely get rid of it. It is never recommended to install Exchange on a DC, SBS notwithstanding. John T From: exchangelist-bounce@xxxxxxxxxxxxx [mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of John L. Gitzen II Sent: Friday, September 21, 2007 9:44 AM To: exchangelist@xxxxxxxxxxxxx Subject: [ExchangeList] Steps to install a new Server We needed to upgrade to new hardware running our Microsoft Windows Server 2003 and MS Exchange 2003. The idea was to replace the old machine with the new one by installing the Server and Exchange software on the new machine and then migrate the Exchange data from the old to the new. I have a small installation with one Server running as my Domain Controller and the old server with Exchange and the new server now also with Exchange. Problem is I am not sure how to complete the migration. This is my first time installing either and the last install was done by contractors. Now when I go into Exchange System Manager /Administrative Groups/Servers, both of my servers are listed. 1. How do I migrate the data from the old server to the new? 2. How do I migrate the Users (AD networked machines running XP Pro) to the new Exchange Server? 3. How do I disconnect the old server? So far as I have seen, none of the books on Exchange cover migrating from one copy of exchange to another on the same network and the same release. Any suggestions would be appreciated. Thanks, John Technology Applied