[diego@localhost ~]$ dig -t mx siguerty.com

; <<>> DiG 9.5.1-P2-RedHat-9.5.1-2.P2.fc10 <<>> -t mx siguerty.com
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 56426
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 1

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

;; ANSWER SECTION:
siguerty.com.           86400   IN      MX      10 mail.siguerty.com.

;; AUTHORITY SECTION:
siguerty.com.           78316   IN      NS      ns2.dpynetworks.com.
siguerty.com.           78316   IN      NS      ns1.dpynetworks.com.

;; ADDITIONAL SECTION:
mail.siguerty.com.      86400   IN      A       76.73.1.234

;; Query time: 260 msec
;; SERVER: 192.168.0.1#53(192.168.0.1)
;; WHEN: Fri Jun 19 17:05:16 2009
;; MSG SIZE  rcvd: 115

[diego@localhost ~]$