On Jun 28, 2013, at 10:54 AM, "Ward, Mike S" <mw...@ssfcu.org> wrote:
> Hello all, is there any reason to setup reverse address entries for a zone?
In article <mailman.710.1372442831.20661.bind-us...@lists.isc.org>,
Charles Swiger <cswi...@mac.com> wrote:
Certainly. Various software performs what's called a double-reverse lookup
to confirm that the A and PTR records match.
On 01.07.13 10:48, Sam Wilson wrote:
Isn't that paranoid reverse lookup? Since reverse lookups can be faked
(I'll spare the details here) some uses of in-addr.arpa also require a
subsequent forward lookup. If there is no PTR record then the double
lookup doesn't happen. I don't know of anything to be gained by
requiring a reverse lookup after a forward lookup.
He apparently meant exactly the same. Also calles FcRDNS - "forward
confirmed" or "full circle" reverse DNS.
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