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  1. #1
    Join Date
    Feb 2004

    Question Massive DNS problems...!

    This week I have struggled with DNS and had problems.

    I set up my domain at the end of last week, so DNS servers should have refreshed by now.

    I have my domain hosted at 1and1 (I can hear you sighing already) and I set up "ns1." and "ns2." subdomains with the A records pointing to the 2 nameserver IPs on my server. I'm using DirectAdmin and I've set up the nameservers correctly on there. Named is running.

    It works about 50% of the time, randomly, in different parts of the world. That's the best way to describe it. My server never goes down, I'm convinced that's not the issue.

    Here's an example of NS2 failing:

    Searching for A record at Got referral to [took 88 ms]
    Searching for A record at Got referral to [took 86 ms]
    Searching for A record at Error: Couldn't resolve DNS server name/IP [][11004].
    An error occurred: Couldn't resolve DNS server name/IP [][11004].
    I could not get to the nameserver authoritative for  Sorry!
    But try it again and NS1 works:

    Searching for A record at Got referral to [took 70 ms]
    Searching for A record at Got referral to [took 24 ms]
    Searching for A record at Reports an answer.
    Record is: blah
    Looking up at Timed out.
    Looking up at Reports 1 A record(s). 74ms.
    Now let me tell you ... there is NO difference between NS1 and NS2 apart from the IP addresses. They are both registered with the same registrar (1and1) on the same domain, they are both set up on my server, they are both pingable (by me). They both resolve to my server.

    What on earth is going on here? Add to this the fact that it seems to be completely random? I'm lost.

  2. #2
    Join Date
    Apr 2003
    It looks like ns2.mydomain is not setup correctly with the registar. I would delete it and try to readd it. The resolving problem it is having is with the registar, for some reason or another it is not giving the ip for ns2 when it is queried.
    John W, CISSP, C|EH
    MS Information Security and Assurance - Server Administration and Security - Managed VPS and Dedicated Servers with VIP Service

  3. #3
    Join Date
    Jan 2005
    Had the same thing happen to me when I changed to my dedi with 1and1, I called them and after 20 mins of trying to explain the problem was on their end, they manually updated the settings.

    Give em a call, their support has gotten marginally better...

  4. #4
    Join Date
    Apr 2005
    silicon and earthquakes
    Check your DNS with the DNS Report. It's an excellent tool to diagnose more obscure DNS problems.

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