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Add windows 2003 R1 DC to 2000 Domain in 2003 R2 Forest - Which DomainPrep?

We have a forest that has been adprep /forestprep'd to 2003 R2, I checked. The domain in question is a 2000 domain. Currently all domain controllers throughout the forest are 2000, but some R2 will be added later in the year (to another domain). I have to add some "new" 2003R1 DC's (the servers do not have r2 licenses) to a domain and want to know :

Which version of adprep/domainprep should I use the r1 version or the r2 version? Or doesn't it matter?

The forest and domains are at 2000 native level

I will then be preping forest for Exchange 2003 (we have Exchange 2000) at the moment
Avatar of MrLonandB

If you are prep'n the domain for R1 machine,  you would want to use adprep for the r1 version -- on the Schema Master.
You can have a 2000 native or mixed-mode domain with 2000 servers, however, if your're planning on doing any Outlook over HTTPS or RPC / OMA for phones, you're going to have to get the whole domain to 2003 native in order to support the RPC calls.
Avatar of Rahul Bansal
Rahul Bansal

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Thanks, prep'd with R2 and 2K3 RTM added successfully.