On Sun, 2006-06-25 at 19:32, Thomas E Dukes wrote:
Your reverse dns MUST come from whoever owns the ipaddress. In 99.9 % of the cases that is your ISP. Some (not many) will actually deligate the reverse dns to you but most will at best add ptr's that match whatever is in the forward zone.
So even if a service such as zoneedit, say they can do reverse DNS, it won't work?
The only way it can work is if whoever owns the address range delegates to them.
I really don't understand how it can work in one direction and not the reverse. If they can keep up with my IP address and match it to my domainanme, seems they could do the reverse.
Names and addresses have a different hierarchy and you have to work your way down from the top in DNS. Names belongs to anyone who registers them; addresses are (mostly) delegated through ISPs and the DNS hierarchy makes it hard to sub-delegate less than a class C block, although CNAME aliases can be used to let someone else actually provide the info.