DHCP / DNS Not updateing correctly

Nikumba · 26 Aug 2009 at 13:52

We have 3 DCs, two at our main site, and a third at another on the end of a LES connection, we have one main DHCP server at our main site serving both the main and remote site.

However we have noticed the DHCP server is not updating DNS correctly, now DHCP and DNS are on seperate machines.

All 4 machines are on teh domain, DNS is set to clear down records, DHCP is set to dynamicly update DNS which is does not seem to be doing correctly.

The only think we can find that might be an issue is on the IPv4 scope on teh DHCP server, Properties, Advanced is an option called "DNS Dynamic updates registration credetials" now this isnt filled in, do we need to fill this in to make it all work happily? or is this some bit of MS redunant code?

All 4 boxes are Windows 2003

Cheers

Kimbie

Little_Crow · 26 Aug 2009 at 14:33

I'm pretty sure this needs filling in, if DNS and DHCP are on seperate boxes as you say, then the credentials are needed to allow it to update DNS on the other box.

I've double checked our system here, and those credentials are filled in (Our DNS and DHCP is hosted on separate boxes as yours are)

Sp00n · 26 Aug 2009 at 14:37

Are non-authorised DNS updates allowed?

iaind · 26 Aug 2009 at 15:14

It needs filling in - I had a similar problem a while back where it wasnt updating and also generating hundreds of audit failures in the security log - turned out someone had changed the password on the account that was specified

ethos · 26 Aug 2009 at 15:27

Is this the same if DNS and DHCP are on the same server?

Mine has nothing in the Username + Domain boxes but does have stars in the password boxes...

I'm getting a lot of Failures on Event ID 566 - Directory Service Access on object type dnsNODE (and others).