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Exchange 2007 cant find Global Catalog

We have created a minimal test network to try out a migration from exchange 2007 to exchange 2010. All our test network has is two machines. One is running windows server 2008 R2 which is the only domain controller and of course is a global catalog and is also a dns server. The domain and forest functional levels are left at 2003. The second machine is running a windows 2003 SP2 server(this is the machine we are trying to install exchange on ) .
I have added the second machine to the domain and done various tests to make sure the network and dns settings are working which they seem to be. However when running the setup for exchange i get the following errors:
 Hub Transport Role Prerequisites
Failed

Error:
Cannot find at least one global catalog server running Windows Server 2003 Service Pack 1 or later in the local Active Directory site.
Recommended Action: http://go.microsoft.com/fwlink/?linkid=30939&l=en&v=ExBPA.3&id=67aca4a0-bc3f-4f8f-8297-b13e0d347942

Elapsed Time: 00:00:01


Client Access Role Prerequisites
Failed

Error:
Cannot find at least one global catalog server running Windows Server 2003 Service Pack 1 or later in the local Active Directory site.
Recommended Action: http://go.microsoft.com/fwlink/?linkid=30939&l=en&v=ExBPA.3&id=67aca4a0-bc3f-4f8f-8297-b13e0d347942

Elapsed Time: 00:00:01


Mailbox Role Prerequisites
Failed

Error:
Cannot find at least one global catalog server running Windows Server 2003 Service Pack 1 or later in the local Active Directory site.
Recommended Action: http://go.microsoft.com/fwlink/?linkid=30939&l=en&v=ExBPA.3&id=67aca4a0-bc3f-4f8f-8297-b13e0d347942

Any ideas on how to solve this?
 
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MOSADMIN
Asked:
MOSADMIN
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1 Solution
 
LLMorrissonCommented:
Does anything get returned if you run this from the Windows 2003 server?

nslookup gc._msdcs.%USERDNSDOMAIN%

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MOSADMINAuthor Commented:
This is the output from when i run the above command

Microsoft Windows [Version 5.2.3790]
(C) Copyright 1985-2003 Microsoft Corp.

C:\Documents and Settings\administrator.EXCHANGETEST>nslookup gc.msdcs.%USERDNSD
OMAIN%
Server:  exchange2010.exchangetest.com
Address:  10.69.68.10

*** exchange2010.exchangetest.com can't find gc.msdcs.EXCHANGETEST.COM: Non-exis
tent domain
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LLMorrissonCommented:
Did you leave off the underscore character?

"_MSDCS" not "MSDCS".

nslookup gc._msdcs.%USERDNSDOMAIN%


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MOSADMINAuthor Commented:
oh yes you are right.
here is the output of the correct command :
Microsoft Windows [Version 5.2.3790]
(C) Copyright 1985-2003 Microsoft Corp.

C:\Documents and Settings\administrator.EXCHANGETEST>nslookup gc._msdcs.%userdns
domain%
Server:  exchange2010.exchangetest.com
Address:  10.69.68.10

Name:    gc._msdcs.EXCHANGETEST.COM
Address:  10.69.68.10
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LLMorrissonCommented:
Sounds like your Exchange 2007 installation might be RTM. You need to ensure you have Exchange 2007 SP1 in order to be supported by your 2008 DC.
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MOSADMINAuthor Commented:
will get exchange sp1 and give that a go.
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MOSADMINAuthor Commented:
perfect, thanks for your help.
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