Registro DMARC
v=DMARC1;p=none;

Servidores DNS Principal (mname) y Secundario (rname)
host: infofo.net
class: IN
ttl: 1800
type: SOA
mname: launch1.spaceship.net
rname: support.spaceship.com
serial: 1771435541
refresh: 43200
retry: 3600
expire: 604800
minimum-ttl: 3600

Información TXT
host: infofo.net
class: IN
ttl: 1800
type: TXT
txt: v=spf1 include:estismail.com ~all
entries: Array