Recently, I’ve gone through an exercise to rebuild the Exchange 2007 environment at my new company. The original Exchange 2007 design was not what I would call optimal, so we decided to just rebuild instead of fix all of the problems. Luckily, most of the users were still on Exchange 2003, so this made the rebuild fairly simple. We did however run into a couple of issues during the uninstall process which resulted in orphaned Exchange servers in the environment. The servers showed up in Exchange 2003 System Manager and Exchange 2007 Management Console, but the server no longer existed. You might run into the same issue if a server was improperly uninstalled or a server was prematurely reimaged, etc.

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