Dns clients not updating
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 reverse lookup zone exists, and I can add entries to it manually, but it doesn't automatically populate.
We have 2 DNS servers and randomly when we move a machine to a different VLAN, the DNS entry never registers the new IP. Edit: According to the article linked by The Cleaner below, the GPO I mentioned in my comment will not do what you want (yeah MS and closed-source software).But checking the boxes for "Register this connection's address in DNS" and "Use this connection's DNS suffix in DNS registration" makes it work.I ran into the same issue years ago the following group policy settings are how I resolved it.This could easily be overkill, but since the above answers didn't cover things from a group policy angle here goes. sends option 81 and its fully qualified domain name to the DHCP server and requests the DHCP server to register a pointer resource record (PTR RR) on its behalf.