Registro DMARC
v=DMARC1; p=reject; sp=reject; pct=100; rua=mailto:adobe@rua.agari.com; ruf=mailto:adobe@ruf.agari.com; fo=1

Servidores DNS Principal (mname) y Secundario (rname)
host: approvr.com
class: IN
ttl: 10800
type: SOA
mname: exfer-vip-01.corp.adobe.com
rname: hostmaster.adobe.com
serial: 4
refresh: 10800
retry: 900
expire: 2419200
minimum-ttl: 300

Información TXT
host: approvr.com
class: IN
ttl: 10800
type: TXT
txt: v=spf1 -all
entries: Array