Comments on: Installing and configuring BIND9 DNS server

By: amjad

amjad — Thu, 27 May 2010 15:36:16 +0000

Try fully qualified domain name like

dig mainserver.mydomain.com

I suspect, your have different search domain in /etc/resolv.conf.

By: Rashid Iqbal

Rashid Iqbal — Thu, 27 May 2010 08:42:30 +0000

here is my complete configuration files:
vi /var/named/chroot/etc/named.conf
options {
directory “/var/named”;
dump-file “data/cache_dump.db”;
statistics-file “data/named_stats.txt”;
memstatistics-file “data/named_mem_stats.txt”;
version “currently unavailable”;
};

zone “mydomain.com” in {
type master;
file “mydomain.com.ns”;
allow-update { none; };
};

zone “12.168.192.in-addr.arpa” in {
type master;
file “12-168-192.in-addr.arpa.ns”;
allow-update { none; };
};

vi /var/named/chroot/var/named/mydomain.com.ns
****
$TTL 1d

@ IN SOA ns.mydomain.com. root (
;mydomain.com. IN SOA ns.mydomain.com. hostmaster.mydomain.com. (
2010031500 ; se = serial number
3h ; ref = refresh
15m ; ret = update retry
3w ; ex = expiry
3h ; min = minimum
)

IN NS ns.mydomain.com.

; private hosts
IN NS 192.168.12.3

ns IN A 192.168.12.3
fish IN A 192.168.12.4
whale IN A 192.168.12.5
monkey IN A 192.168.12.6
horse IN A 192.168.12.7
cow IN A 192.168.12.8
mainserver IN A 192.168.12.2

***********************

vi /var/named/chroot/var/named/12-168-192.in-addr.arpa.ns

*******
$TTL 1d
@ IN SOA ns.mydomain.com. hostmaster.mydomain.com. (
2010031500 ; se = serial number
3h ; ref = refresh
15m ; ret = update retry
3w ; ex = expiry
3h ; min = minimum
)

@ IN NS ns.mydomain.com.

; private hosts, reverse lookup
3 IN PTR ns.mydomain.com.

2 IN PTR mainserver.mydomain.com.
3 IN PTR centos.mydomain.com.
4 IN PTR fish.mydomain.com.
5 IN PTR whale.mydomain.com.
6 IN PTR monkey.mydomain.com.
7 IN PTR horse.mydomain.com.
8 IN PTR cow.mydomain.com.

****************************************

the error is

[root@centos etc]# nslookup 192.168.12.2
Server: 192.168.12.3
Address: 192.168.12.3#53

2.12.168.192.in-addr.arpa name = mainserver.mydomain.com.

[root@centos etc]# nslookup mainserver
Server: 192.168.12.3
Address: 192.168.12.3#53

** server can’t find mainserver: NXDOMAIN

[root@centos etc]#

kindly guide.

Best Regards,

By: Rashid Iqbal

Rashid Iqbal — Thu, 27 May 2010 08:41:58 +0000

yes ..
where is the reverse lookup zone file

vi /var/named/2.168.192.in-addr.arpa.zone

***************
$TTL 1d
@ IN SOA ns.mydomain.com. hostmaster.mydomain.com. (
2010031500 ; se = serial number
3h ; ref = refresh
15m ; ret = update retry
3w ; ex = expiry
3h ; min = minimum
)

@ IN NS ns.mydomain.com.

; private hosts, reverse lookup
3 IN PTR ns.mydomain.com.

****************************************

but configuring all this and all seems ok
service starts properly but when i do nslookup get below mentioned error:

[root@centos etc]# nslookup 192.168.12.2
Server: 192.168.12.3
Address: 192.168.12.3#53

2.12.168.192.in-addr.arpa name = mainserver.mydomain.com.

[root@centos etc]# nslookup mainserver
Server: 192.168.12.3
Address: 192.168.12.3#53

** server can’t find mainserver: NXDOMAIN

By: sree

sree — Wed, 09 Dec 2009 04:17:31 +0000

thanks a lot. This is very helpful. And more over could u help in configuring the reverse lookup …….