dig dominio.com MX
Un ejemplo con google.com:
root@bt:~# dig google.com MX
; <<>> DiG 9.5.0-P2.1 <<>> google.com MX
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 2354
;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 4
;; QUESTION SECTION:
;google.com. IN MX
;; ANSWER SECTION:
google.com. 5 IN MX 400 google.com.s9b2.psmtp.com.
google.com. 5 IN MX 100 google.com.s9a1.psmtp.com.
google.com. 5 IN MX 300 google.com.s9b1.psmtp.com.
google.com. 5 IN MX 200 google.com.s9a2.psmtp.com.
;; ADDITIONAL SECTION:
google.com.s9a1.psmtp.com. 5 IN A 74.125.148.10
google.com.s9b1.psmtp.com. 5 IN A 74.125.148.13
google.com.s9a2.psmtp.com. 5 IN A 74.125.148.11
google.com.s9b2.psmtp.com. 5 IN A 74.125.148.14
;; Query time: 23 msec
;; SERVER: 192.168.193.2#53(192.168.193.2)
;; WHEN: Sun Mar 7 23:05:16 2010
;; MSG SIZE rcvd: 226
Entonces en la sección ANSWER SECTION en la 6° Columna después de MX aparecen los servidores SMTP de google...
google.com.s9b2.psmtp.com
google.com.s9a1.psmtp.com
google.com.s9b1.psmtp.com
google.com.s9a2.psmtp.com
P.D: Recordemos que dig también está para windows... googleen...
Salu2.
[+] ZioneR
Muy wen tips... :)
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