Registro DMARC
v=DMARC1; p=reject;

Servidores DNS Principal (mname) y Secundario (rname)
host: talkoftoday.com
class: IN
ttl: 3600
type: SOA
mname: ns1.name.com
rname: hostmaster.nsone.net
serial: 1781604629
refresh: 43200
retry: 7200
expire: 1209600
minimum-ttl: 3600

Información TXT
host: talkoftoday.com
class: IN
ttl: 300
type: TXT
txt: v=spf1 ip4:82.165.189.117 ip4:82.165.253.0/24 ~all
entries: Array