+ Post New Thread
Results 1 to 2 of 2
Windows Server 2000/2003 Thread, DNS forwarding failing in Technical; I have an irritating problem where DNS requests do not seem to be getting forwarded by our DNS server. We ...
  1. #1

    localzuk's Avatar
    Join Date
    Dec 2006
    Location
    Minehead
    Posts
    18,156
    Thank Post
    522
    Thanked 2,551 Times in 1,980 Posts
    Blog Entries
    24
    Rep Power
    877

    DNS forwarding failing

    I have an irritating problem where DNS requests do not seem to be getting forwarded by our DNS server.

    We have our DNS set up to forward to 2 DNS servers - the LEA ones and the SWGfL ones.

    When we have the SWGfL servers set up as the first server to forward to, all is well with accessing SWGfL services, but our LEA services all seem to drop off (ie. we can no longer resolve LEA email servers etc...).

    If we swap them around, so the LEA one is first to forward to, we can resolve LEA services but suddenly all our SWGfL services stop working.

    Has anyone got any idea why this is happening? It is driving me insane!

  2. #2

    localzuk's Avatar
    Join Date
    Dec 2006
    Location
    Minehead
    Posts
    18,156
    Thank Post
    522
    Thanked 2,551 Times in 1,980 Posts
    Blog Entries
    24
    Rep Power
    877
    Ok, answering my own question:

    Windows 2003 DNS servers ask servers in the list for records, and if any of the servers in the list provide a response (whether that response is 'YES I HAVE IT' or 'NO I DON'T'), rather than a timeout, then the local DNS server stops looking.

    So, it appears that the problem in our chain is our LEA DNS servers - they're responding with 'No, we don't have the address' rather than either timing out, or forwarding the request upstream themselves.

SHARE:
+ Post New Thread

Similar Threads

  1. ClearCloud DNS: An Anti Malware DNS
    By DaveP in forum IT News
    Replies: 2
    Last Post: 18th July 2010, 09:55 AM
  2. DNS forwarding
    By DSapseid in forum Windows
    Replies: 6
    Last Post: 14th September 2009, 10:12 AM
  3. DNS Forwarding
    By Hightower in forum Windows
    Replies: 23
    Last Post: 12th March 2009, 01:47 PM
  4. Replies: 5
    Last Post: 29th September 2008, 07:16 PM
  5. DNS Problems... DCHP correct, DNS wrong
    By burgemaster in forum Windows
    Replies: 7
    Last Post: 27th June 2008, 11:05 AM

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •