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DNS problems RRS feed

  • Question

  • Hi there,

    I am facing a problem with my DNS server. I have an AD server with DNS in it.

    Everything was working fine, then some days ago some of my clients had problems to connect to a site we have internally (a helpdesk internal system, which is web-based). After we doing an ipconfig /flushdns and ipconfig /registerdns it started working again. This happened randomly. It happened to internet websites too.

    Then a day after my clients started having problems to send emails to some receivers, its like 10 domains we just can`t send emails, we receive a message that the mail is delayed and its trying to send for the next 2 days, but it never reaches the destiny.

    Now some of my clients cannot get automatic IPs, I don`t know why but when I set fixed IP to them it work perfectly, if I let it automatic they just get a 169 bla bla bla IP and internet and network doesnt work. It happens just for some people, randomly.

    Sunday, May 14, 2017 2:11 PM

All replies

  • NSLOOKUP google.com (doing it from the DNS server)
    C:\Users\782159>nslookup
    Default Server:  localhost
    Address:  127.0.0.1
    
    > www.google.com
    Server:  localhost
    Address:  127.0.0.1
    
    Non-authoritative answer:
    Name:    www.google.com
    Addresses:  2404:6800:4004:801::2004
              216.58.197.164
    
    > 216.58.197.164
    Server:  localhost
    Address:  127.0.0.1
    
    Name:    nrt12s02-in-f164.1e100.net
    Address:  216.58.197.164
    
    >
    Sunday, May 14, 2017 2:12 PM
  • If some client can't have ip adress it's not DNS issue but DHCP issue...

    You need to be sure DHCP adresses are available and server is fully functionnal and patched.

    You need to be sure there isn't any issue with network too...


    Merci de marquer comme réponse les sujets qui vous ont permis d'avancer afin que cela puisse être bénéfique aux personnes qui rencontrent le même problème.

    Sunday, May 14, 2017 6:20 PM
  • ok but my first and second problem is DNS related right?

    is there anyway to check if my DNS is fully configured and working properly?

    i can send you results of the commands.

    kind regards.

    Sunday, May 14, 2017 7:29 PM
  • Hi rdgcatell

    >>is there anyway to check if my DNS is fully configured and working properly?

    You could verify your basic DNS configuration by following link:

    https://technet.microsoft.com/en-us/library/cc959303.aspx

    Best Regards,

    Candy


    Please remember to mark the replies as answers if they help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

    Tuesday, May 16, 2017 6:23 AM
  • Hi rdgcatell,

    Just checking in to see if the information provided was helpful.

    Please let us know if you would like further assistance.

    Best Regards,

    Candy


    Please remember to mark the replies as answers if they help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

    Tuesday, May 23, 2017 1:39 AM