Servidores DNS Principal (mname) y Secundario (rname)
host: imass.net
class: IN
ttl: 21600
type: SOA
mname: ns1.virginmedia.net
rname: hostmaster.virginmedia.net
serial: 2012020800
refresh: 86400
retry: 7200
expire: 1209600
minimum-ttl: 1800

Servidor de Correo
host: imass.net
class: IN
ttl: 21600
type: MX
pri: 10
target: mail.imass.net