To install Bind9 on ubuntu enter the command

apt-get install bind9 dnsutils

After the bind9 installed succesfully change the Directory to /etc/bind

cd /etc/bind

list content of the /etc/bind directory

ls -l

Open named.conf.local to define the new Zone information

nano named.conf.local

For the demostration rukspot.com taken as domain name and use 10.0.2.15 as ethernet interface address.

To see the interface addres enter the ifconfig eth0 or approproate interface

ifconfig eth0

Add the new Zone information as below

zone "rukspot.com" {
        type master;
        file "/etc/bind/db.rukspot";
};

zone "2.0.10.in-addr.arpa" {
        type master;
        file "/etc/bind/db.10";
};

Now create the db.rukspot and db.10 files.

Enter below command to copy and create new file using exesting files

cp db.local db.rukspot
cp db.127 db.10

Then open the db.rukspot

nano db.rukspot

Enter the db.rukspot records

;
; BIND data file for local loopback interface
;
$TTL    604800
@       IN      SOA     ns.rukspot.com. root.rukspot.com. (
                              2         ; Serial
                         604800         ; Refresh
                          86400         ; Retry
                        2419200         ; Expire
                         604800 )       ; Negative Cache TTL
;
@       IN      NS      ns.rukspot.com.
@       IN      A       10.0.2.15
ns      IN      A       10.0.2.15
        IN      MX 10   mail.rukspot.com.
www     IN      CNAME   ns
mail    IN      CNAME   ns

open the db.10

nano db.10

Enter the db.10 records

;
; BIND reverse data file for local loopback interface
;
$TTL    604800
@       IN      SOA     ns.rukspot.com. root.rukspot.com. (
                              1         ; Serial
                         604800         ; Refresh
                          86400         ; Retry
                        2419200         ; Expire
                         604800 )       ; Negative Cache TTL
;
@       IN      NS      ns.rukspot.com.
1       IN      PTR     ns.rukspot.com.
2       IN      PTR     ns.rukspot.com.
5       IN      PTR     ns.rukspot.com.
15      IN      PTR     ns.rukspot.com.

Now restart the DNS service and bind9 entering this command

invoke-rc.d bind9 restart

Then check the DNS working correctly

Enter nslookup rukspot.com

nslookup rukspot.com

If you get this kind of response forward lookup zone is working

root@rukshan-VirtualBox:/etc/bind# nslookup mail.rukspot.com
Server:		127.0.0.1
Address:	127.0.0.1#53

mail.rukspot.com	canonical name = ns.rukspot.com.
Name:	ns.rukspot.com
Address: 10.0.2.15

Then enter nslookup 10.0.2.15

nslookup 10.0.2.15

If you get this kind of response reverse lookup zone is working

root@rukshan-VirtualBox:/etc/bind# nslookup 10.0.2.15
Server:		127.0.0.1
Address:	127.0.0.1#53

15.2.0.10.in-addr.arpa	name = ns.rukspot.com.

To see the debug information type dig mail.rukspot.com

dig mail.rukspot.com

Output should be similar to this.

root@rukshan-VirtualBox:/etc/bind# dig mail.rukspot.com

; <<>> DiG 9.8.1-P1 <<>> mail.rukspot.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 22206
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;mail.rukspot.com.		IN	A

;; ANSWER SECTION:
mail.rukspot.com.	604800	IN	CNAME	ns.rukspot.com.
ns.rukspot.com.		604800	IN	A	10.0.2.15

;; AUTHORITY SECTION:
rukspot.com.		604800	IN	NS	ns.rukspot.com.

;; Query time: 1 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Wed Nov 19 10:11:40 2014
;; MSG SIZE  rcvd: 81

Now DNS is working correctly.