Registro DMARC
v=DMARC1; p=quarantine;

Servidores DNS Principal (mname) y Secundario (rname)
host: iferc.org
class: IN
ttl: 86400
type: SOA
mname: asns1.customer.ne.jp
rname: miyato.naoaki.qst.go.jp
serial: 1634273530
refresh: 3600
retry: 1800
expire: 3628800
minimum-ttl: 3600

Servidor de Correo
host: iferc.org
class: IN
ttl: 3600
type: MX
pri: 10
target: v0702-139.mailsecure.jp

Información TXT
host: iferc.org
class: IN
ttl: 3600
type: TXT
txt: v=spf1 +ip4:203.138.87.139 -all
entries: Array