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Renamng a SLD with a child domain and exchange

I inherited this network and the previous network admin named this domain XYZ and then created a child domain UVW.XYZ. The exchange box is a member Server 2003 R2 SP2 (back-end) and Server 2003 R2 SP2 (Front End) in the DMZ, 5 DCs are server 2003 R2 SP2, 1 DC Server 2003 R2 SP1, 4 DCs Server 2008 STD SP2, the remaining 14 member servers are (12 Server 2003 R2 SP2 and 2 Server 2000 SP4).

Domain XYZ
Site 1: (2) Server 2003 R2 SP2 DCs, (1) Server 2003 R2 SP1 DC, (6) Server 2003 R2 SP2 Member Servers, own subnet
Site 2: (1) Server 2003 R2 SP2 DC, own subnet
Site 3: (1) Server R2 SP2 DC, (4) Server 2003 R2 SP2 Member Servers, own subnet
Site 4: (1) Server 2008 STD DC, own subnet
Site 5: (1) 2003 R2 SP2 DC and (1) Server 2008 STD DC, (1) Server 2003 R2 SP2 Member Sever, own subnet


Child Domain UVW.XYZ
Separate Site
On its own subnet
(2) Server 2003 R2 SP2 DCs, (3) Server 2003 R2 SP2 Member Servers, (2) Server 2000 SP4 Member Servers

Exchange 2003 SP2 - 6.5.7638.1
First Storage Group
1. group 1 mail
2. group 2 mail
3. group 3 mail
4. Public Folders

I want to rename the domain because i will be upgrading Exchange 2007 and once i do that i will not have the ability to rename it ever unless MS comes out with a fixup utility for 2007 or 2010. Plus i believe this would resolve a lot of issues i been having with replication and DNS.

Should i do the RENDOM or should i start a new Domain. If I start a new one can i run two domains on the same LAN? I do have enough servers to accommodate the second option but it seems like a lot of work.

Any suggestion would be great.

Thanks.
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cslt
Asked:
cslt
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2 Solutions
 
George SasIT EngineerCommented:
I would go with rendom , adding an extra domain and migrating would be to much trouble I believe.
There is an article here explaining in detail what you are trying to accomplish :
http://www.msexchange.org/tutorials/Domain-Rename.html

However , before you do the move check if you don't hav any aplications dependant on the old domain name , services that are set to login using a domain account , backup jobs set up with domain account , SQL servers etc.

And why go to Exchaneg 2007 and not go directly to 2010 ?
Any why rename the domain ? Just because you don't like the name ? If something works and it's not broken don't try to "fix it" just for the fun.
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George SasIT EngineerCommented:
Also in order to be able to rename it your forest must have Windows Server 2003 forest functional level. You have that ?
And depending on your applications and everything you have on the domain I think this will be a move that will require a bit of work , timing and documentation in order to be done properly.
I would just let it the way it is if nothing is "broken".

Also , you can run as many domains / forests as you want on your LAN.
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csltAuthor Commented:
I am still having issues
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