I am using centos5. now i configured dns server in my system. Forward lookup are working fine. but reverse lookup not working.
it shows like this error.

nslookup 192.168.0.11
Server: 192.168.0.11
Address: 192.168.0.11#53

** server can't find 11.0.168.192.in-addr.arpa: NXDOMAIN

and then i check it shows like this

Dec 3 22:07:37 it named[5226]: zone tuxnet.com/IN/external: loaded serial 2003040701
Dec 3 22:07:37 it named[5226]: running
Dec 3 22:07:37 it named[5226]: zone tuxnet.com/IN/internal: sending notifies (serial 2003040701)
Dec 3 22:07:37 it named[5226]: zone 0.0.168.192.in-addr.arpa/IN/internal: sending notifies (serial 2004042701)
Dec 3 22:07:37 it named[5226]: zone tuxnet.com/IN/external: sending notifies (serial 2003040701)
Dec 3 22:07:37 it named[5226]: client 192.168.0.14#32800: view internal: received notify for zone 'tuxnet.com'
Dec 3 22:07:37 it named[5226]: client 192.168.0.11#32800: view internal: received notify for zone 'tuxnet.com'
Dec 3 22:07:37 it named[5226]: client 192.168.0.11#32800: view internal: received notify for zone '0.0.168.192.in-addr.arpa'
Dec 3 22:07:37 it named[5226]: client 192.168.0.14#32800: view internal: received notify for zone 'tuxnet.com'
Dec 3 22:07:37 it named[5226]: client 192.168.0.14#32800: view internal: received notify for zone '0.0.168.192.in-addr.arpa'


Please advise me.

Thanks.

At a first place it looks like there is no entry for 192.168.0.11 (NXDOMAIN)

You should post the relevant part of named.conf, where you define the internal view and the 0.0.168.192.in-addr.arpa zone, as well as the zone file itself. Otherwise we cannot tell what is the problem.

Thanks for your help

Now its working fine.