Query About NSLOOKUP

Discussion in 'Site & Server Administration' started by dct, Aug 17, 2006.

  1. #1
    I have a dedicated server which is also home to the name server for my domain. When I do an nslookup against the nameserver I get the following:
    I've never seen root servers be listed like this when doing an nslookup, does anybody know if this is indicative of a problem in my setup.

    Thanks
     
    dct, Aug 17, 2006 IP
  2. Cryogenius

    Cryogenius Peon

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    #2
    I have something similar - if I do 'nslookup coolest-gadgets.com ns1.coolest-gadgets.com' I get a time out. But if I drop the ns1 server from the command line, it works just fine.

    Checking your domain with www.dnsstuff.com and www.dnsreport.com show that everything is okay.

    Perhaps it's a firewall issue? DNS uses both TCP and UDP, and nslookup defaults to one of these, which might happen to be blocked. Check that both protocols are open. It might be that your DNS server is deliberatly blocking these lookups for security reasons.

    Cryo.
     
    Cryogenius, Aug 17, 2006 IP
    dct likes this.
  3. dct

    dct Finder of cool gadgets

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    #3
    Thanks for the detailed reply Cryo.

    I'm pretty clueless when it comes to server setups. My provider also advised the usage of dnsreport.

    I'm seeing some very strange intermittent problems where some scripts stop running half way through for no apparent reason, as it's a third party script (WordPress) my provider cannot help, so I'm trying to get answers to all things that look a bit odd to me (clutching at straws really).

    Thanks again.
     
    dct, Aug 17, 2006 IP