[CentOS] Re: DNS Server
Les Mikesell
lesmikesell at gmail.com
Mon Jun 26 00:53:32 UTC 2006
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.
--
Les Mikesell
lesmikesell at gmail.com
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