- You can build a brand new server, join the existing organization, and move everyone from the legacy server to the newly built server.
- You can build a new server with the same name, but tweak it offline. You bring the original server offline during a maintenance window, bring the new server online, and run setup /disasterrecovery. You would then copy the old databases and mount them.
These are two distinct ways to handle your request. My preference would be the first choice, but the second choice is also an option.
In the event you are rebuilding or removing the first Exchange server, reference Knowledge Base article How to remove the first Exchange 2000 server from the site.
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This was first published in November 2005