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How to add DNS to an existing Active Directory DC

I have a customer with an existing Active Directory domain/forest with multiple DCs.  All servers are Win2K3.  DNS is installed only on DC1 at the current time.  DC2 and DC3 do not currently have DNS.  I want to install DNS on DC3 and have DNS be active directory integrated.  However, whenever I add DNS to DC3, it refuses to create the forward lookup zones and the those zones don't replicate to DC3.  However, the reverse lookup zones DO automatically appear (replicate) immediately after installation.  More info:  DC1 was originally an SBS server on which the customer (themselves!) used the Microsoft Transition Pack to "upgrade" to the mainline MS products.  The customer himself promoted DC3 to be a DC but did not elect to add DNS at installation time.   DC3 will be moving to support a branch location and so it will need to have DNS on it.
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etcs
Asked:
etcs
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1 Solution
 
Olaf De CeusterCommented:
Why don't you demote DC3 , reinstall DNS on DC3 and run DCpromo again as a member server.
I assume DC3 is already joined to the domain.
Hope that helps,
Olaf
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KCTSCommented:
Why not make chnage DNS so that it is active directory integrated and it will automatically replicate. Active Directory Integrated DNS has many benefits including less overheads, better security and more efficient replication.
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etcsAuthor Commented:
If necessary, as olafdc suggests, I will demote DC3 and re-promote.  But I just figured since AD was working perfectly already and replicating perfectly, that there had to be a better, more straightforward way.   KCTS suggested I make DNS "active directory integrated" but I believe it already is!  If I try to use the "Create default application paths partition..." option on DC1, I am told that I can't because the partition already exists.   How can I confirm if DNS is already active directory integrated?
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Olaf De CeusterCommented:
According to the question this is an AD integrated DNS. One more thing make sure DC3 is looking at DC1 for primary DNS.
Olaf
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etcsAuthor Commented:
Well, the client "solved" this problem himself.  He shut down all three DCs.  He then brought them up in the order DC1, DC2, and DC3.  He then just re-installed DNS on DC3 and, he claims, it allowed him to create a FLZ, DNS installed successfully ,and all zones correctly replicated.  Don't know what the reboots did, but whatever it was, it allowed DNS to correctly install and replicate to DC3.  Since apparently the only "correct" answer I have been able to find was to demote DC3 and re-promote it (concurrently installing DNS), I guess olafdc should get the points.
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KCTSCommented:
The rebooting restarted the NetLogon Service which re-registed the SRV records allowing windows services to be located properly. I still think you should be using AD Integrated DNS.
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