I am trying to create a reverse lookup zone for one of my domains. I pretty much know what I need, but the way ISPConfig names things in DNS seems to be a bit confusing. I created a new zone with x.x.x.in-addr.arpa. Within this zone I have added NS records and a single PTR record. The PTR record however doesn't seem to work when I do a reverse lookup. Any pointers or examples would be very much appreciated.