On Sat, 26 Jun 1999 [EMAIL PROTECTED] wrote:
>
> There CAN be more than one. I've used as many as 7 PTR's on one IP before.
> Maybe there's not _supposed_ _to_ be, but it _can_ be. Maybe qmail won't
> support more than one, but it can get more than one. I did get all 7 PTRs
> and the above example shows that the 2 records do come through. So why
> would BIND support it if it's not supposed to be?
But what use?
How do you receive it correctly?
A PTR record is used to get the name belonging to an ip address. This
means that if an address has more than one, than which do you receive it?
If it is given back randomly, then it is unreliable, for selectively
allowing access according to that.
If always the same one is given back, then you don't get the others, hence
no use...
If all is given back, then you always has to choose of them, and it just
don't feel right to me, anyway.
Robert Varga
