Registro DMARC
v=DMARC1; p=quarantine; rua=mailto:dmarcreports@sudoers.so; ruf=mailto:dmarcreports@sudoers.so; pct=100; fo=1;

Servidores DNS Principal (mname) y Secundario (rname)
host: sudoers.so
class: IN
ttl: 3601
type: SOA
mname: dns1.registrar-servers.com
rname: hostmaster.registrar-servers.com
serial: 1732217824
refresh: 43200
retry: 3600
expire: 604800
minimum-ttl: 3601

Servidor de Correo
host: sudoers.so
class: IN
ttl: 1799
type: MX
pri: 10
target: mail.protonmail.ch

Servidor de Correo
host: sudoers.so
class: IN
ttl: 1799
type: MX
pri: 20
target: mailsec.protonmail.ch

Información TXT
host: sudoers.so
class: IN
ttl: 1799
type: TXT
txt: protonmail-verification=692a44e971210c788b57b818fb1028ac06ec513f
entries: Array

Información TXT
host: sudoers.so
class: IN
ttl: 1799
type: TXT
txt: v=spf1 include:_spf.protonmail.ch mx ~all
entries: Array