Windows Thread, Disappearing DNS records in Technical; Hopefully someone here can help, as my knowledge of DNS is limited and there appears to be very little that ...
4th May 2010, 03:04 PM #1
Disappearing DNS records
Hopefully someone here can help, as my knowledge of DNS is limited and there appears to be very little that is out there in the way of documentation, to help me resolve my particular issue.
ok here goes.
We have a Parent domain, which contains a stub zone of our child domain. Within this stub zone it obviously holds records all the Name servers from the child domain. Here lies the problem, All the Name servers do have a record, however there is not an A record that relates to all the NS records.
This means when I right click on the stub zone and go to properties, under the NameServers tab, a lot of the servers are showing as (Unknown) although they are live. Wait, it gets worse. The missing A records to randomly re-appear and others that were previously there disappear, so my list of Unknowns) is forever changing.
Obviously this sounds like replication is coming from more then one source, or that the source keeps having it's records changed. Well the DNS events show the updates always coming from the same master server (in the child domain), and when manually checking that master server, it ALWAYS has total knowledge of all the Name servers.
Has anyone come across this issue before?
Any help much appreciated
IDG Tech News
5th May 2010, 09:08 AM #2
Not come accross this before no, But it have found an MS article that sounds about right.
If not can you copy and paste the output of "ipconfig /all" into here so we can look a bit deeper.
Do you only have a single DNS Server Setup? Have you traced what the ip addresses of the unknown servers are?
Do you have any Wireless routers that may have DNS and DHCP enabled and are causing problems?
5th May 2010, 10:36 AM #3
Thanks for the reply.
I took a quick look at that article, but it seems to relate to NT4. I have noticed this issue on both a Windows 2003 and Windows 2008 box. Unfortunately it doesn't have the same options at the NT4 suggestions.
Our DNS server setup is AD Intergrated, we have 7 DNS servers in our Parent Domain and 150 DNS servers in one of our child domains. The 150 number is historical from our old network, we are going to be significantly reducing this, hence the need to start investigating DNS.
We do not currently use routers to manage any of our DNS.
I can identify the Unknown servers and they all ping from the DNS server that marks them as Unknown. Then next time I go into DNS some of the Unknown are now known and visa versa.
The DNS servers are set to themselves as the primary DNS and to another DNS server in the domain as secondary
5th May 2010, 10:45 AM #4
Eeeks 150 DNS Server, you must have on mammoth network there! Sounds like something that may take a while to resolve, it may be worth getting help from somebody who is close to you to come and have a look in person?
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