First a tip for a great post about Aging and Scavenging of DNS records in Active Directory.


And second, I have heard about cases when server records hasn’t been updated for a while and gets cleaned up even dough they shouldn’t.

The blog post above has a “sanity check phase” where you look at records with old time stamps and resolves the issues before enabling scavenging. It also have a few tips on possible problems.

One problem I heard about was that Dynamic DNS registration was disabled for unknown reasons and they had to deploy scripts to enable this for a lot of servers.

(Note. Default the Windows Client/Server does an update every 24th hour.)

My thought is: In this case, to minimize the list of old time stamps and to ensure DDNS is enabled, you could enable two Group policy’s that can be found in:

Computer Configuration\Administrative Templates\Network\DNS Client

  1. Dynamic Update
  2. Registration Refresh Interval

Before you start with Aging and Scavenging, be more patient and enable DDNS on all your servers were applicable.

(There are a few other good policy’s for the DNS client, but I will cover them another time where they can be in good use) 

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