This article was previously published under Q182227
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DNS server does not check for delegations before forwarding to a forwarder.On a primary DNS (DNS-main), if you delegate a subdomain to another DNS(DNS-sub), DNS name resolution works fine. However, if you set up DNS-mainto use a forwarder (non-slave), the resolution request is sent to theForwarder first and may fail.
Checking for delegated domains before sending a name resolution request tothe forwarder is new functionality added to the DNS.
To resolve this problem, obtain the latest service pack for Windows NT 4.0 or Windows NT Server 4.0, Terminal Server Edition. For additional information, click the following article number to view the article in theMicrosoft Knowledge Base:
152734 How to Obtain the Latest Windows NT 4.0 Service Pack
Microsoft has confirmed that this is a problem in Windows NT 4.0 and Windows NT Server 4.0, Terminal Server Edition. This problem was first corrected in Windows NT 4.0 Service Pack 4.0 and Windows NT Server 4.0, Terminal Server Edition Service Pack 4.