Registro DMARC
v=DMARC1; p=reject; rua=mailto:rc7yjbis@ag.us.dmarcian.com;

Servidores DNS Principal (mname) y Secundario (rname)
host: amgpromo.com
class: IN
ttl: 73133
type: SOA
mname: pdns82.ultradns.com
rname: hostmaster.omnicomgroup.com
serial: 2020032361
refresh: 7200
retry: 600
expire: 2419200
minimum-ttl: 3600

Información TXT
host: amgpromo.com
class: IN
ttl: 73134
type: TXT
txt: v=spf1 -all
entries: Array