The next step is to create an A record for the host www and @.
Then, you need to launch the downloaded Dynamic DNS client version 2.0x on your computer and create a profile for each host.
As the DHCP servers in this environment are Linux based we would like the clients to update their PTR records themselves.
Updating the PTR records means a client registers his name and IP in the reverse lookup zone.
Is the Linux DNS server already a member of the AD?