Dns server is not updating
After the (Record Timestamp) (No-refresh interval) elapses we enter the Refresh interval.The refresh interval is the time when refreshes to the timestamp are allowed. The client is allowed to come in and update it’s timestamp.If there are missing entries, you likely have your DHCP missing one of two settings: This is required if you have DHCP installed on a Domain Controller.It is an issue on Server 2000, 2003, 2008, 2008R2, Server 2012, Server 2012 R2 and will likely be an issue in the newer builds.of these must elapse before a record can be deleted.The No-refresh interval is a period of time during which a resource record cannot be refreshed.The “zone can be scavenged after” timestamp is the first of your safety valves.It gives clients time to get their record timestamp updated before the big axe swings.
The next safety valves are the Refresh and No-refresh intervals.If the client has an existing host record and changes the IP of the host record this is also considered an “Update” and the timestamp is set.If the client has an existing host record with the same IP address then this is considered a “Refresh” and the timestamp may or may not get changed depending on zone settings. The third way to set scavenging on records is by using with the /ageallrecords switch.Remember that old test server that you built two years ago that caught fire before it could be used? We’ll go through how scavenging is setup then I’ll give you my best practices.Scavenging will help you clean up old unused records in DNS.