Registro IPv4
host: xxx.com
class: IN
ttl: 1800
type: A
ip: 141.0.173.173

Servidores DNS Principal (mname) y Secundario (rname)
host: xxx.com
class: IN
ttl: 1800
type: SOA
mname: ns1.serverstack.com
rname: webmaster.xxx.com
serial: 2014040207
refresh: 28800
retry: 3600
expire: 604800
minimum-ttl: 1800

Servidor de Correo
host: xxx.com
class: IN
ttl: 1800
type: MX
pri: 10
target: xxx.com