Use a different AD DC for Exchange 2010

I want to use a different Active Directory domain controller for my Exchange server 2010 because I want to decommission the current domain controller. Exchange works well with the  new Active directory domain controller, but when I restart Exchange server it fails to locate the new active directory and wants to reference the old domain controller. any advice?
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Don S.Commented:
Sounds like you have not moved all of your fsmo roles over to the new AD.  Also, check to see if it is a GC and has been replicated successfully.  It's also possible you have DNS issues as well.

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MohlalefiAuthor Commented:
It has replicated successfully, and it is a GC as well. the DNS reports no errors.
Don S.Commented:
DNS may not report errors, but it may not be configured properly.  Does the DNS entry for the domain point to the old server or the new server?
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