Registro DMARC
v=DMARC1; p=reject; pct=100; sp=none; rua=mailto:6e1a24f3@inbox.us.redsift.cloud; ruf=mailto:6e1a24f3@inbox.us.redsift.cloud; adkim=r; aspf=r; fo=1; rf=afrf; ri=3600

Servidores DNS Principal (mname) y Secundario (rname)
host: lineworkercertificationprogram.net
class: IN
ttl: 1800
type: SOA
mname: henrik.ns.cloudflare.com
rname: dns.cloudflare.com
serial: 2351850988
refresh: 10000
retry: 2400
expire: 604800
minimum-ttl: 1800

Información TXT
host: lineworkercertificationprogram.net
class: IN
ttl: 300
type: TXT
txt: v=spf1 -all
entries: Array