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Windows Server DNS automatically updates A records

Posted on 2011-05-10
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Last Modified: 2012-05-11
I have a windows server 2008 domain controller that has the DNS server role installed for internal DNS management. The server has an internal IP address and an external IP address. The internal IP address, of course, is registered to the NIC on the server. I need the DNS server records to use the external IP address (for reasons I need not go into, but good reasons never-the-less). Every time I update the host A record with the external IP address, several days later it gets automatically updated to use the IP address assigned to the NIC. I have found that there is a setting in the NIC configuration that says "automatically update DNS", which I have turned off. Does anyone know how else the host A record is getting automatically updated?
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Question by:seanmcilvenna
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Chris Dent earned 500 total points
ID: 35731998
The A record you normally use for your NS record?

MS DNS updates NS records by default, even if the zone does not permit dynamic updates (if I remember correctly). You can prevent that behaviour as follows:

dnscmd /config /DisableNSRecordsAutoCreation 1

Should not need you to restart the DNS service, but always worth considering "just in case".

Chris
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Author Closing Comment

by:seanmcilvenna
ID: 35732055
So far, the command appears to have worked. I will have to wait and see whether or not the command makes a difference though. I'm not sure when schedule the automatic updates used before, but typically about once a week.
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