Registro DMARC
v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s

Servidores DNS Principal (mname) y Secundario (rname)
host: learnfinance.com
class: IN
ttl: 1304
type: SOA
mname: dns1.p01.nsone.net
rname: hostmaster.nsone.net
serial: 1751282909
refresh: 43200
retry: 7200
expire: 1209600
minimum-ttl: 3600

Información TXT
host: learnfinance.com
class: IN
ttl: 12104
type: TXT
txt: v=spf1 -all
entries: Array