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2003 Domain Controller in 2000 Domain with Exchange 2003

Posted on 2007-10-17
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We have one Windows 2000 DC, SP4.  Its the forest Root and is the only domain controller, (worried, yes I am).  We have a seperate server which is a 2003 box.  This server has Exchange 2003 installed.

My query is when exchange was installed the setup would have ran a forest prep and domain prep ?  Normally if I was adding a 2003 server as a backup DC and its the first time I would run foresprep and domain prep on the 2000 server first, then add the 2003 server onto the domain. So, in this case if I am now going to add a new 2003 DC to the domain should I just be able to dcpromo the new server without running forest and domain prep again because it was done when exchange was installed ?
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Question by:tickleonthetum
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by:Darylx
ID: 20092812
If you have Exchange 2003 installed on the Windows 2003 server, you won't be able to promote it to a domain controller.

Running Exchange on a domain controller isn't recommended anyway.

http://blogs.brnets.com/michael/archive/2005/01/24/319.aspx
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by:tickleonthetum
ID: 20092936
No thats not what I meant.

server1 is a windows 2000 domain controller, forest root.
server2 is a windows2003 file server with exchange 2003 installed.

The new server, server3 is a windows 2003 server I want to make a DC.  So my question was when they installed exchange originally they would have ran domain prep and forest prep ?  So can I just add the new 2003 server as a DC to the 2000 domain or do I have to run forest prep and domain prep on the 2000 DC ?

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by:Darylx
ID: 20093049
Right, sorry...

I'm trying to find some definate documentation but from what I've seen so far, I would say yes, you do need to run adprep again.  It seems there are some differences between Exchange forestprep and Windows forestprep.

"Exchange Server 2003 ForestPrep extends the Active Directory schema to include Exchange-specific classes and attributes".

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by:Darylx
ID: 20093175
Here's a couple of links.  They're not great but they confirm that the Exchange adprep and Windows adprep commands extend the schema in different ways so they both need to be run.
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