NSlookup timed out the first time but subsequent attempts work just fine and Slow DNS resolution

Posted on 2009-04-27
Last Modified: 2012-05-06
I have a server running windows 2003 which is set up as a domain controller. It's domain is and I find that when I perform an NSlookup for an external domain name like that it will initially time out but subsequent attempts work ok. Also I find that the DNS resolution on connected clients takes a long time.

My primary DNS resides at I have set up the dns on the server to be a stub for I am pretty sure the problem is related to the DNS setup because I am not very experienced with DNS.

I have included a screen dump of the DNSmgmt screen.

Please help me resolve this.


Question by:svelletri
    LVL 70

    Accepted Solution


    Hey Steven,

    Forwarders have to be the first thing to question. Open up the Properties for the server in the console there and select the Forwarders tab. Anything listed?

    If there is...

    First step is to get rid of them and see how it performs using Root Hints (which is the default, it uses the contents of the Root Hints tab to find its way).

    If you find things work a lot better without those Forwarders you have two choices:

    1. Continue with Root Hints
    2. Confirm the list of Forwarders with your ISP / Host / whatever else you might have to connect to the internet



    Author Comment

    Hi Chris,

    Yes that seemed to work just fine thank you.

    When you say forwarders do you mean my ISP's dns servers?
    LVL 70

    Expert Comment

    by:Chris Dent

    Yep. Was that what you had there?


    Author Comment

    Hi Chris,

    No I had a bogus address there. Now that I added the ISP's DNS servers things are working swimmingly.

    Thanks again!

    Author Closing Comment


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