What is a reverse zone and how do I set one up?

Solution 1:

For a reverse zone there to be useful, you need to have control of the zone delegated to the servers that you're creating them on.

Essentially, this needs to come from the owner of the IP address; you'll need to ask your VPS provider if they'll delegate control of the reverse lookup for you address to you (or, otherwise, configure the record to what you desire it to be).

The format of the record is to reverse the octet parts of the IP address, in order to fit within the hierarchy structure of DNS. For instance, the reverse lookup for the address 192.0.2.150 is 150.2.0.192.in-addr.arpa.