Microsoft, Windows Server, 2003, Domain name is not resolving the correct domain controller IP Address

We are having one Windows 2003 Domain Controller, One Exchange 2007 Server installed on Windows 2003 server and it is also a domain controller. After making exchange as additional domain controller i have given the exchange server also global catalog role.This created issues so i removed the global catalog from the exchange server now only windows 2003 root domain controller is having the global catalog role but when i am pingiing domain name from any user computer the IP address resolving is exchange server IP address.It should resolve the root domain controller IP Address. How can i solve this issue. Please assist.
abey_vAsked:
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Sinder255248Commented:
If they're both domain controllers then it will give which ever one responds quickest.  Say your domain is called ABC.com, and your DC's are 192.168.2.1 & 192.168.2.2 if you do an NSLOOKUP against ABC.com you should get a reply with both IP addresses.  If you ping ABC.com however, you will get a reply off which ever it picks.
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abey_vAuthor Commented:
So this is not because i have given exchange server Global Catalog role?Now the role is removed and the root domain controller is having that role.
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jazzIIIloveCommented:
Hi there;

Before removing role, need replication for the 2 servers...First thing very wrong in the design that two things in one machine...In the end, you will definitely face another problems...You must differentiate the Exc. and DC...No pinging or other things will solve or give any clue...You must redesign it...

By luck, if you can find this a solution (which is improbable i think), you will face another soon...

Best regards...

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abey_vAuthor Commented:
jazzIIIlove redesigning in the sense i have to reinstall both dc and exchange servers? now the main DC which is root domain controller is in one Hp DL380 server and exchange server is on another DL 380 server. They are not in one machine.Can you clarify what you meant by redisigning?
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Darius GhassemCommented:
Look over this link which will give you some great information on this. An Exchange server can be installed on a DC. There can be problems when installed on a DC but look over the last link information on this.

http://www.msexchange.org/tutorials/Planning-First-Exchange-Server.html

http://msexchange.org/tutorials/Exchange-System-Manager-Domain-Controller-Selection.html

http://www.petri.co.il/problems_with_exchange_2003_installed_on_domain_controllers.htm
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jazzIIIloveCommented:
>>They are not in one machine.

my apologies, i got the question wrong apparently...
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