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Exchange 2010 Decommission

Posted on 2015-02-16
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Last Modified: 2015-02-18
I think I know but wanted to verify:  A pair of Exchange 2010 servers, two weeks ago I migrated the last of the on-premise accounts to Office365.  There are no other active, or used mailboxes on either server.  In fact I had all three databases dismounted for the past week.

In order to perform a correct removal, I am thinking that I could just correctly uninstall Exchange from the second server first, then run the uninstaller on the first server and that's it right?  I figured that since our entire messaging setup is in Microsoft's hands now *shiver* that as long as Exchange is fully and completely removed then AD will be happy.

Oh wait.. what do I do about MX records in local DNS forward lookup zones?
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Question by:Ben Hart
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Don S. earned 2000 total points
ID: 40612926
You must have all exchange related DNS records pointing to O365 - that means MX records as well as autodiscover, etc...  Once that is all correct, then yes, start uninstalling exchange.  The last exchange removal will remove objects from AD.  However, if you still have items in any of the stores, the uninstall process will fail.  But that's a subject for another thread.
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