[vinaysatwe]

after the changes sugeested the output is as follows;

cat /etc/hosts

# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost.localdomain localhost
::1 localhost6.localdomain6 localhost6
192.168.1.5 mail.mydomain.com mail



cat /etc/resolv.conf
search mydomain.com
nameserver 127.0.0.1



dig mydomain.com mx

; <<>> DiG 9.3.4-P1 <<>> mydomain.com mx
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 29016
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;mydomain.com. IN MX

;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Thu Jul 2 16:39:18 2009
;; MSG SIZE rcvd: 36




dig mydomain.com any
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 41092
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;mydomain.com. IN ANY

;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Thu Jul 2 16:39:49 2009
;; MSG SIZE rcvd: 36


host mail.mydomain.com
Host mail.mydomain.com not found: 2(SERVFAIL)