I have an AD Domain controller that runs as the DNS server for the domain. There is a separate (non-Windows) DHCP server that issues the IP addresses for the sub-net and the DHCP server is set to point to the DC as being the primary DNS server so all clients point to and use my main DNS server. The DNS server forwards requests it can't resolve to the WAN gateway. All works fine as long as the client or server is a member of the domain.
I have 2 sandbox servers that are not domain members; their main use is to run Virtual Server 2005 images and each image requests and gets an IP address from the same DHCP server. These machines can all access the internet via the DNS server's name resolution but they can't resolve each other's names.
I think that my problem is that these non-domain member machines do not get their IP addresses registered in the DNS server.
I tried changing the security setting for the DNS server but it still doesn't seem to register the non-domain member IP addresses.
Any ideas on what may be causing this?