Registro DMARC
v=DMARC1; p=quarantine

Servidores DNS Principal (mname) y Secundario (rname)
host: world4public.com
class: IN
ttl: 13998
type: SOA
mname: ns1.dnsowl.com
rname: hostmaster.dnsowl.com
serial: 1771736416
refresh: 7200
retry: 1800
expire: 1209600
minimum-ttl: 600

Servidor de Correo
host: world4public.com
class: IN
ttl: 3600
type: MX
pri: 10
target: mail.protonmail.ch

Servidor de Correo
host: world4public.com
class: IN
ttl: 3600
type: MX
pri: 20
target: mailsec.protonmail.ch

Información TXT
host: world4public.com
class: IN
ttl: 3600
type: TXT
txt: v=spf1 include:_spf.protonmail.ch ~all
entries: Array

Información TXT
host: world4public.com
class: IN
ttl: 3600
type: TXT
txt: protonmail-verification=4d699dedc0f065967085175f191b4402fb16a61e
entries: Array