Registro DMARC
v=DMARC1; p=reject; fo=1; rua=mailto:dmarc_rua@emaildefense.proofpoint.com,mailto:dmarc_rua@caiso.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com,mailto:dmarc_ruf@caiso.com

Servidores DNS Principal (mname) y Secundario (rname)
host: wirto.org
class: IN
ttl: 90
type: SOA
mname: ns1.caiso.com
rname: hostmaster.ns1.caiso.com
serial: 2018070504
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 86400

Información TXT
host: wirto.org
class: IN
ttl: 90
type: TXT
txt: v=spf1 -all
entries: Array