Here’s a quick tip on how you can automate DNS records in Windows 2008 DNS server when you are dynamically provisioning systems that do not auto-register with DNS.
There is a handy utility, part of the Windows 2008 DNS Tools, that allows you to do this from any authenticated Windows 2008 Server that is part of the domain/zone.
To create an A record w/ PTR:
dnscmd <dnsserver> /RecordAdd <zone> <hostname to add> /CreatePTR A <IP of Machine>
You can also remove the record:
dnscmd <dnsserver> /RecordDelete <zone> <hostname to remove A <IP of Machine>