Registro DMARC
v=DMARC1; p=reject; rua=mailto:dmarc_reports@applause.com; ruf=mailto:dmarc_reports@applause.com; fo=1

Servidores DNS Principal (mname) y Secundario (rname)
host: webapptesting.com
class: IN
ttl: 3600
type: SOA
mname: ens1.applause.com
rname: hostmaster.applause.com
serial: 2020111621
refresh: 3600
retry: 600
expire: 1209600
minimum-ttl: 60

Información TXT
host: webapptesting.com
class: IN
ttl: 3600
type: TXT
txt: v=spf1 -all
entries: Array