forward name resolution OK, but reverse doesn't work ...

[Eivind Olsen]

Thomas Schweikle wrote:

> But not reverse:
> !user at ks1:~$ host 74.125.79.99
> !Host 99.79.125.74.in-addr.arpa not found: 2(SERVFAIL)

...

> !zone "in-addr.arpa" {
> !  type slave;
> !  file "/var/cache/named/root/in-addr.arpa.slave";
> !  masters { 192.5.5.241; };
> !  notify no;
> !};

You seem to have set up slaving of the in-addr.arpa from 192.5.5.241
(f.root-servers.net), but that's not one of the authoritative servers for
in-addr.arpa.

Remove the slaving of in-addr.arpa from your configuration. Or check if
it's possible / allowed to slave it from any of the 6 in-addr.arpa
nameservers: [a-f].in-addr-servers.arpa

I'm guessing your logs also have entries about being unable to do zone
transfers of in-addr.arpa.

Regards
Eivind Olsen