I have one Exchange Server 5.5 SP4 running on a Win2000 SP3 domain controller/global catalog. For hardware reasons I need to move the Exchange 5.5 to another server with a different name. What is the best way to do this? Does the new server need to run Active Directory, or can I migrate the Exchange in a standalone server? Also, do I have to configure DNS in the new server, or can I use the DNS of the old server?
The easiest way is to install Exchange 5.5 in the same Site and Organization as your existing server. Then, apply Exchange 5.5 SP4, recreate any connectors and update DNS to include, if necessary, a new MX record.
Then, move the mailboxes from your existing server to the new server, and migrate your public folders by replicating and re-homing them.
Verify that all of your Outlook users have had their profiles updated to point them to their new mailbox stores.
Then, it sounds like your existing Exchange 5.5 server is the first Exchange 5.5 server in this site, so also follow the procedures detailed in How to remove the first Exchange server in a site.
Once you've done all of these things, you should be able to decommission your old Exchange 5.5 components and uninstall Exchange from the Windows 2000 computer.