Servidores DNS Principal (mname) y Secundario (rname)
host: cascademath.com
class: IN
ttl: 3600
type: SOA
mname: ns1.name.com
rname: hostmaster.nsone.net
serial: 1648931658
refresh: 43200
retry: 7200
expire: 1209600
minimum-ttl: 3600

Servidor de Correo
host: cascademath.com
class: IN
ttl: 300
type: MX
pri: 10
target: in1-smtp.messagingengine.com

Servidor de Correo
host: cascademath.com
class: IN
ttl: 300
type: MX
pri: 20
target: in2-smtp.messagingengine.com

Información TXT
host: cascademath.com
class: IN
ttl: 300
type: TXT
txt: v=spf1 include:spf.messagingengine.com ?all
entries: Array