In article <mailman.807.1373643569.20661.bind-us...@lists.isc.org>, "Novosielski, Ryan" <novos...@ca.rutgers.edu> wrote:
> Came across another instance where [reverse lookups] may matter: TCP Wrappers. > Although the case there was a bit more peculiar -- rr.net does not > appear to have FORWARD DNS for at least some of its dynamic address > space. So you can get a PTR, and then address validation fails on the > forward address. I guess perhaps if you had no PTR it would never go > that far. Yep, when you have PTRs they should agree with the A records or paranoid reverse lookup will fail. That should still be fairly quick, though, since there should be NXDOMAIN responses to the forward lookups rather than timeouts. Sam -- The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336. _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
