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  • dns keeps failing

    I have an sbs 2003 running with AD and dns on it.
    A few times a day, my client computers can't surf the net anymore.

    When I restart the dns service, everything works fine again.
    Does anyone have an idea?

  • #2
    Re: dns keeps failing

    1. Have you checked the eventlog for any error messages? If so, please post then back here.
    2. Are you running the latest SP?

    Michael
    Michael Armstrong
    www.m80arm.co.uk
    MCITP: EA, MCTS, MCSE 2003, MCSA 2003: Messaging, CCA, VCP 3.5, 4, 5, VCAP5-DCD, VCAP5-DCA, ITIL, MCP, PGP Certified Technician

    ** Remember to give credit where credit is due and leave reputation points sigpic where appropriate **

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    • #3
      Re: dns keeps failing

      We currently have SP1 running on the sbs.
      The event log doesn't says much.
      The dns service keeps shutting down (and starting up automatic again).
      This happens about 10 to 20 times a day.

      Other then that, I get two errors:

      Event Type: Information
      Event Source: DNS
      Event Category: None
      Event ID: 5504
      Date: 15/04/2008
      Time: 15:00:00
      User: N/A
      Computer: SBS2003
      Description:
      The DNS server encountered an invalid domain name in a packet from 64.18.8.208. The packet will be rejected. The event data contains the DNS packet.

      For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
      Data:
      0000: 00841b7c 00010001 0006000c 74726107
      0010: 77616c68 74656e03 61357304 73700531
      0020: 0370746d 006d6f63 01000100 01000cc0
      0030: 00000100 04004038 0a041240 02001dc0
      0040: 00000100 14004038 6e647005 75083273
      0050: 6172746c 03736e64 0074656e 02001dc0
      0060: 00000100 16004038 6e647005 75083673
      0070: 6172746c 02736e64 75026f63 1dc0006b

      (keeps coming back every 20minutes with different ip)

      and



      Event Type: Error
      Event Source: DNS
      Event Category: None
      Event ID: 7050
      Date: 15/04/2008
      Time: 13:18:57
      User: N/A
      Computer: SBS2003
      Description:
      The DNS server recv() function failed. The event data contains the error.

      For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
      Data:
      0000: 00002746

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      • #4
        Re: dns keeps failing

        Who are your Forwarders? Are they your ISP or someone elses?
        Also try without forwarders and DNS will use the root hints (make sure they are up to date)
        TIA

        Steven Teiger [SBS-MVP(2003-2009)]
        http://www.wintra.co.il/
        sigpic
        Iím honoured to have been selected for the SMB 150 list for 2013. This is the third time in succession (no logo available for 2011) that I have been honoured with this award.

        We donít stop playing because we grow old, we grow old because we stop playing.

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        • #5
          Re: dns keeps failing

          We used to work with root hints.
          Now we changed to see if it works better with forwarders.

          Our forwarder is the ISP.
          For the moment I'm only receiving error 5504.
          (dns is still failing from time to time of course)

          Any idea what i can check or change?

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          • #6
            Re: dns keeps failing

            Maybe remove the config and re-config DNS ?
            Don't know if it's possible, but maybe remove and re-install DNS and then configure it ?

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