Exchange 2010 looking for old dc when adding email

Hi Everyone,
Here is the problem.
I have a Server 2K8 R2 running Exchange 2010 SP3. One month ago i changed my DC  to another DC running Server 2K8 R2. Both were 2K8 R2.Demoted the old one without any problem using DCPromo. Now i am trying to add an email address to a new user and get an error message saying:


Summary: 1 item(s). 0 succeeded, 1 failed.
Elapsed time: 00:00:00


Alexandre St-Jean
Failed

Error:
Active Directory operation failed on DELTA-DC03.*******. This error could have been caused by user input or by the Active Directory server being unavailable. Please retry at a later time. Additional information: Additional information: The global catalog verification failed. The global catalog is not available or does not support the operation. Some part of the directory is currently not available.
Active directory response: 000020E1: SvcErr: DSID-03200674, problem 5002 (UNAVAILABLE), data 0
.

The server is unavailable.
Click here for help... http://technet.microsoft.com/en-US/library/ms.exch.err.default(EXCHG.141).aspx?v=14.3.174.1&t=exchgf1&e=ms.exch.err.Ex872538

Exchange Management Shell command attempted:
Enable-Mailbox -Identity '********/Transformateur Delta/Granby/Bureau/Genie Industriel/Alexandre St-Jean' -Alias 'alexandre.st-jean'

Elapsed Time: 00:00:00


Exchange is trying to communicate with old DC. I checked everywhere i could, in ADUC,ADSS,in EMC all settings point to the good server,DNS (only thing in is a Alias of DC03 pointing to new DC),Exchange power shell -Get ADServerSettings  : fl gives the good info as well as netdom /query fsmo.
Used up all my resources!!!
thank you very much.
Patrick
jettaa2vr6Asked:
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jettaa2vr6Connect With a Mentor Author Commented:
I finally fixed my problem.
Closed EMC console,went into: C:\Users\administrator.DELTA\AppData\Roaming\Microsoft\MMC
and deleted the EMC file that was there.
Reopened EMC console added new email to new user and BAM it worked.
no more errors.
Console must of had a cache in that file that was pointing to old DC.
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Seth SimmonsSr. Systems AdministratorCommented:
try restarting the exchange topology service
all exchange services are dependent on that so may need to consider brief downtime
should rediscover domain controllers properly
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jettaa2vr6Author Commented:
I rebooted the server this morning thinking it would do a fix but no....didn't work.
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Creating Active Directory Users from a Text File

If your organization has a need to mass-create AD user accounts, watch this video to see how its done without the need for scripting or other unnecessary complexities.

 
Seth SimmonsSr. Systems AdministratorCommented:
@SEHC

the author already stated he used that powershell command
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SEHCCommented:
He did and I do see that information in the question.  the link for the article that I added has command that allows you to set the DC that you would like exchange to use that way it does not look for the other server.

Set-ExchangeServer -Identity -StaticDomainControllers dc1.mydomain.ad,dc2.mydomain.ad

there is also this article that may help as well

http://marckean.wordpress.com/2011/06/30/exchange-2010-domain-controller-and-global-catalog-servers-being-used-by-exchange/
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jettaa2vr6Author Commented:
I did try that but in the EMC console Under Server config-modify config domain controller.
Also in settings of server config i see the good DC!!!!
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jettaa2vr6Author Commented:
Did some more research and found that.
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