Servidores DNS Principal (mname) y Secundario (rname)
host: itmexicali.edu.mx
class: IN
ttl: 550471
type: SOA
mname: itmexicali.edu.mx
rname: webmaster.itmexicali.edu
serial: 201309012
refresh: 10800
retry: 7200
expire: 2419200
minimum-ttl: 172800

Servidor de Correo
host: itmexicali.edu.mx
class: IN
ttl: 550472
type: MX
pri: 1
target: ASPMX.L.GOOGLE.COM

Información TXT
host: itmexicali.edu.mx
class: IN
ttl: 550472
type: TXT
txt: v=spf1 include:_spf.google.com ~all
entries: Array