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Server 2016 r2 dns not updating

If it didn't, you might try looking in the DNS event log on the server to see if there are any issues there.

3) If the issue is that your reverse zones are mismatched between domain controllers (meaning a host was able to register with one of the DCs, but the registration did not get replicated to the others) it could mean the zones themselves aren't replicating between domain controllers.Only if you know with certainty that the updates get sent only to a local DNS server should you run the Dynamic DNS Updates service.Most home users who use DSL/Cable routers as DHCP/NAT servers to facilitate multiple host connections to the Internet should turn off dynamic DNS updates.Make sure the reverse zone is AD-Integrated and also check the Zone Transfers tab and make sure they are allowed (generally Only to servers listed on the Name Servers tab).Also make sure your DNS server are listed on the Name Servers tab. Ok so given that your DHCP server is not registering the records on behalf of the clients, and aside from your windows clients not being set to register with DNS on their NICs (which you should verify in TCP/IP properties on the client NIC), I would check the security settings on your reverse zone to make sure clients are allowed to register in the reverse zone.The DHCP server in this case is NOT a windows server. The only thing I had to do after this was, flush the dns entries on the clients with: ipconfig /flushdns After this they have poped up in my reverse lookup zone. The fix of adding the DHCP server to DNSupdateproxy group solved my issues.

I guess that the forward lookup records are created by the host, but the reverse records are created by the DHCP server?

The following list illustrates a typical example of how a private DNS update leaks out to the global Internet. The DHCP client first sends a query to its local domain name server (LDNS) and asks for the authoritative server for the zone of its domain name (step 3).

Once the DHCP client receives a response (step 4), it sends the update to the indicated server (step 5).

On the DNS tab enable DNS dynamic updates and set to "Always dynamically update..." Also enable Dynamic Update for clients that do not request updates.

1a) Even if these are enabled, you might need to make sure the DHCP server has permissions to update DNS records.

The forward DNS entries ("A" records) for windows machines on the domain are populated automatically.