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Anthony H.Flag for United States of America

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EMERGENCY: Exchange lost communication with AD after demoting windows 2003 server.

I put in a new server 2008 R2 to replace 2003 DC.

I demoted the 2003 DC and now exchange is not working (running on windows 2008 R2, exchange 2010 std).

When I go to check the server to add another local user (to give admin rights) it doesn't even show the domain. it only shows the local computer name.  But when I check under computer it still has the FQDN pointing to the domain.

super critical! any ideas?
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yo_bee
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It was a DNS issue
That also would explain it.

I am guessing that the 2003 held the DNS role as well?