Registro DMARC
v=DMARC1; p=reject; rua=mailto:emailreports@eastman.com; ruf=mailto:emailreports@eastman.com

Servidores DNS Principal (mname) y Secundario (rname)
host: premiumshieldchina.com
class: IN
ttl: 900
type: SOA
mname: ns1.eastman.com
rname: awsdns-hostmaster.amazon.com
serial: 1
refresh: 7200
retry: 900
expire: 1209600
minimum-ttl: 86400

Información TXT
host: premiumshieldchina.com
class: IN
ttl: 21600
type: TXT
txt: v=spf1 -all
entries: Array

Información TXT
host: premiumshieldchina.com
class: IN
ttl: 21600
type: TXT
txt: v=dkim1; p=
entries: Array