LinuxQuestions.org - Setup DNS server on Ubuntu 7.04 Server edition using Bind 9

I followed the tutorial I found here:

http://ubuntuforums.org/showthread.php?t=236093

to setup dns server on my Ubuntu 7.04 Server edition. But I got ANSWER:0 when I do dig mydomain and can't find mydomain when I do nslookup. Below is the result of both dig and nslookup. I would appreciate if anyone could point me to the problem and how to fix it. Thank you very much.

Code:

home@ubuntu:/$ dig mydomain



; <<>> DiG 9.3.4 <<>> mydomain

;; global options:  printcmd

;; Got answer:

;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 47194

;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0



;; QUESTION SECTION:

;mydomain.                      IN      A



;; AUTHORITY SECTION:

mydomain.              38400  IN      SOA    ns1.mydomain. admin.mydomain. 2006081401 28800 3600 604800 38400



;; Query time: 2 msec

;; SERVER: 192.168.1.109#53(192.168.1.109)

;; WHEN: Sun Sep 16 11:23:51 2007

;; MSG SIZE  rcvd: 72



home@ubuntu:/$ nslookup mydomain

Server:        192.168.1.109

Address:        192.168.1.109#53



*** Can't find mydomain: No answer