Re: DNS Issues - After Upgrading to ADS

DJ wrote:
Hello All:

Prepping for an upgrade from 4.0 to 2003 and am running into some
issues in our lab environment. Here's a brief look at the setup and
what has occurred.

NT 4.0 Domain - mydomain

1 PDC
1 BDC

Existing internal DNS servers. Both servicing internal clients with
forwarders set to go out to our ISP's name servers. We have 2
external name servers in our DMZ but they don't play into this issue.

DNS1
DNS2

Upgrade -

Put up a new BDC (DC1) on good hardware, promoted it to PDC. Took old
pdc offline for failover.

Actually, you should have kept a disconnected BDC for failover.
How To Upgrade a Windows NT 4.0-Based PDC to a Windows Server 2003-Based
Domain Controller: http://support.microsoft.com/kb/326209/en-us

In my existing DNS environment, I created a
zone, mydomain.com and made the soon to be new DC (DC1) in the AD
domain as authoratative and created entiries as follows.

NS - (nameserver record) DC1.MYDOMAIN.COM
A - (host record) dc1 - 10.0.8.111

Ran 2003 upgrade on DC1 and it went fine. I can login, access
resources etc. Problem is this:

I cannot run DCPROMO on any other existing 2000 servers. I get an
error telling me that the MYDOMAIN.COM is not an active directory
domain or the DNS server cannot be contacted. It's pingable by name
so it is not a network issue and resolution is there. I have
obviously done something wrong here. Can anyone offer some help with
this?

Are the Win2k using the same DNS server as the Win2k3?

Install the support tools from the WinServer2003 CD to the 2k3 and run
dcdiag /fix & netdiag /fix, then run dcdiag /v & netdiag /v and look for
errors. Post results from a netdiag /test:ipconfig /test:dns /v if you find
DNS errors. (This netdiag will uncover most of the common errors in
Configuring TCP/IP and DNS) Note- These two apps create log files in the
directory they are ran from e.g C:\Documents and Settings\Administrator.

The Win2k Servers have the same tools, but you must install them from the
Win2k CD.

--
Best regards,
Kevin D. Goodknecht Sr. [MVP]
Hope This Helps
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.

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