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Windows 2008 domain rename. RRS feed

  • Question

  • We have a domain which is actually a sub domain "ad.domainname.com" and would like to drop the ad so we just have "domainname.com". Externally and as far as the website goes it is "domainname.com", however active directory has the ad as well as Exchange 2007 so I guess my question is can we drop the ad from the domain without doing a total domain name change? I thought about bringing up a new domain and migrating everything, but I don't think I could enable a trust between the 2 because it would basically be the same domain name.

    Confusing I know!

    Thanks...

    Friday, September 23, 2011 3:00 PM

Answers

  • You can’t rename the domain because of Ex2007.  With Ex2007, domain rename operation is not supported.

    Also, keep in might that, internal and external name doesn’t have to be the same.

    You won’t be able to establish a trust if NetBIOS or FQDN of the domains are same.  So you need to create a new domain with different NetBIOS and FQDN to establish trust.

    What is the reason for this domain rename?


    Santhosh Sivarajan | MCTS, MCSE (W2K3/W2K/NT4), MCSA (W2K3/W2K/MSG), CCNA, Network+| Houston, TX
    Blogs - http://blogs.sivarajan.com/

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    • Proposed as answer by Meinolf Weber Sunday, September 25, 2011 8:47 AM
    • Marked as answer by Bruce-Liu Thursday, September 29, 2011 8:31 AM
    Friday, September 23, 2011 3:03 PM

All replies

  • You can’t rename the domain because of Ex2007.  With Ex2007, domain rename operation is not supported.

    Also, keep in might that, internal and external name doesn’t have to be the same.

    You won’t be able to establish a trust if NetBIOS or FQDN of the domains are same.  So you need to create a new domain with different NetBIOS and FQDN to establish trust.

    What is the reason for this domain rename?


    Santhosh Sivarajan | MCTS, MCSE (W2K3/W2K/NT4), MCSA (W2K3/W2K/MSG), CCNA, Network+| Houston, TX
    Blogs - http://blogs.sivarajan.com/

    FaceBook Twitter LinkedIn SS Tech Forum

    This posting is provided AS IS with no warranties,and confers no rights.
    • Proposed as answer by Meinolf Weber Sunday, September 25, 2011 8:47 AM
    • Marked as answer by Bruce-Liu Thursday, September 29, 2011 8:31 AM
    Friday, September 23, 2011 3:03 PM
  • Unfortunately no you won't be able to drop the "ad" without a rename,  you also can't rename in your case because Exchange 2007 is in the mix.

    Jorge has a really good blog entry about domain rename and you will see the Exchange info there 

    http://blogs.dirteam.com/blogs/jorge/archive/2010/10/10/should-you-do-a-domain-rename-or-not-that-s-the-question.aspx

     

    Thanks

     

    Mike


    http://adisfun.blogspot.com
    http://twitter.com/mekline Twitter
    • Proposed as answer by Meinolf Weber Sunday, September 25, 2011 8:47 AM
    Friday, September 23, 2011 3:06 PM
  • Hello,

    see that about renaming domains: http://technet.microsoft.com/en-us/library/cc738208(WS.10).aspx

    The domain rename operation is not supported in Microsoft Exchange Server 2007 or Exchange Server 2010. DNS domain rename is supported in Exchange Server 2003. However, renaming of the NetBIOS domain name is not supported in any version of Exchange Server

     


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    • Proposed as answer by Meinolf Weber Sunday, September 25, 2011 8:48 AM
    Saturday, September 24, 2011 8:28 AM
  • Is it a sub domain or do you just have the name ad.domainname.com on your root?

    If you have 2 domains you can install a new exchange server in the root domain and then migrate users to that one.

    But I will quess that you only have one domain with the wrong domain name. Your solution could be to export data / backup Exchange, then uninstall exchange before a domain renaming. Install Exchange and import data back again.

    It all depends on the number of users and work you have to put into creating a new domain. Migrating to same domain name are not possible, there is way to export to files and then import this into new server.

    But what is the Netbios name of the domain? is it "AD" or "domainname"?

    Saturday, September 24, 2011 9:01 AM
  • Domain renaming is not simple, it is more complex what is been seen in the document, if you have Exchange 2007 & above or CA services running, you can't perform the domain rename. Netbios rename for any version of Exchange running is not possible.

    For migration Domain SID should be unique, FQDN name/Netbios name should be unique. If you plan to use same Netbios name as existing for new domain, you can't create trust between them which is min prerequisite for ADMT where as Quest allow migration w/o trust(you can't migrate SIDHistory) but again issue over here. You need to go for the option of building temporary domain, migrate everything there and once all done, remove the old domain and again create the new domain with the name of your choice and re-migrate everything, yes it is lengthy step with double migration involved.

    Even though you can rename a domain with Exchange 2003, but personally i would not recommend as i have seen in the past things gets completely broken due to adamant client stressing on domain rename. You can refer domain rename and its side effects.

    http://technet.microsoft.com/en-us/library/cc738208%28WS.10%29.aspx

    http://support.microsoft.com/kb/178009

       

    Regards


    Awinish Vishwakarma

    MY BLOG:  http://awinish.wordpress.com


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    • Proposed as answer by Meinolf Weber Sunday, September 25, 2011 8:48 AM
    Saturday, September 24, 2011 11:05 AM
  • see:
     
     

    <o:p></o:p>

    Cheers,<o:p></o:p>


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    Jorge de Almeida Pinto | MVP Identity & Access - Directory Services

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    "pfoley" wrote in message news:9d5d9d4a-7923-45b5-ae17-72c88bde1649@communitybridge.codeplex.com...

    We have a domain which is actually a sub domain "ad.domainname.com" and would like to drop the ad so we just have "domainname.com". Externally and as far as the website goes it is "domainname.com", however active directory has the ad as well as Exchange 2007 so I guess my question is can we drop the ad from the domain without doing a total domain name change? I thought about bringing up a new domain and migrating everything, but I don't think I could enable a trust between the 2 because it would basically be the same domain name.

    Confusing I know!

    Thanks...


    Jorge de Almeida Pinto [MVP-DS] (http://jorgequestforknowledge.wordpress.com/)
    Saturday, September 24, 2011 9:30 PM
  • It's actually a subdomain per se, but in Active Directory it is the only domain. Many moons ago when we were a Novell shop and decided to go to Exchange I had to create an active directory domain and my boss at the time which was anti Microsoft wouldn't let me name it domainame.com because we were already using that which didn't make any difference at all. So when I created it I had to use ad.domainame.com and it has been a pain ever since then.

    I thought I might be able to create another domain with just the root domain, install Exchange and then migrate everything to that domain. I am pretty sure that won't work because of the naming and not being able to create the trust between the 2. I realize it would be a lot of work, but it has also been a pain in a$$ living with this.

    I guess I'll just live with it for another 11 years or until I leave this place.

    Thanks for all of you advice.

    Wednesday, September 28, 2011 12:10 PM
  • Well if you have the time and resources you might try to P2V the domain controll and Exchange and try a domain renaming in a closed enviroment.

    I have renamed a domain with Exchange 2007 and it worked fine, but it was a small easy solution, and there was some minor issues, but cannot recommend doing it (at least without a great fallback solution or a big test)

    Wednesday, September 28, 2011 12:46 PM
  • Just thinking out load here, but are e-mail addresses are domainame.com and all of our external websites are domainame.com and we have certificates on the Exchange server for not only ad.domainame.com, but domainame.com. We also have mx records for both so would that make any difference?

    Our domain controllers are ad.domainame.com so I guess it wouldn't matter.

    I have been kicking this around for years now and started to do it with Exchange 2003, but thought it would get better with later editions of Windows and Exchange, however it got worse.

    Thanks for everyones responses.

    Wednesday, September 28, 2011 2:27 PM
  • SMTP email address has nothing do with AD domain name.  In other words it can be different.  Also, you can have multiple email address if needed.


    Santhosh Sivarajan | MCTS, MCSE (W2K3/W2K/NT4), MCSA (W2K3/W2K/MSG), CCNA, Network+| Houston, TX
    Blogs - http://blogs.sivarajan.com/

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    This posting is provided AS IS with no warranties,and confers no rights.
    Wednesday, September 28, 2011 2:32 PM
  • SMTP email address has nothing do with AD domain name.  In other words it can be different.  Also, you can have multiple email address if needed.


    Santhosh Sivarajan | MCTS, MCSE (W2K3/W2K/NT4), MCSA (W2K3/W2K/MSG), CCNA, Network+| Houston, TX
    Blogs - http://blogs.sivarajan.com/

    FaceBook Twitter LinkedIn SS Tech Forum

    This posting is provided AS IS with no warranties,and confers no rights.


    Yes I know that, but like I said just thinking out loud. Maybe sometime in the future, but maybe not.

    It's not going to work no matter which way I look at it right now though.

    Thanks again.

    Wednesday, September 28, 2011 5:07 PM