Registro DMARC
v=DMARC1;p=reject;sp=reject;adkim=s;aspf=s;fo=1;rua=mailto:support@ibidata.com,mailto:support@ibidata.com

Servidores DNS Principal (mname) y Secundario (rname)
host: intro-inc.com
class: IN
ttl: 900
type: SOA
mname: ns-357.awsdns-44.com
rname: awsdns-hostmaster.amazon.com
serial: 1
refresh: 7200
retry: 900
expire: 1209600
minimum-ttl: 86400

Información TXT
host: intro-inc.com
class: IN
ttl: 300
type: TXT
txt: v=spf1 -all
entries: Array