Registro DMARC
v=DMARC1; p=reject; rua=mailto:report@dmarc.amazon.com; ruf=mailto:report@dmarc.amazon.com

Servidores DNS Principal (mname) y Secundario (rname)
host: awsdns-29.com
class: IN
ttl: 900
type: SOA
mname: g-ns-1757.awsdns-29.com
rname: awsdns-hostmaster.amazon.com
serial: 1
refresh: 7200
retry: 900
expire: 1209600
minimum-ttl: 86400

Información TXT
host: awsdns-29.com
class: IN
ttl: 170717
type: TXT
txt: v=spf1 -all
entries: Array