Registro DMARC
v=DMARC1; p=quarantine

Servidores DNS Principal (mname) y Secundario (rname)
host: twsmail.com
class: IN
ttl: 3601
type: SOA
mname: dns1.registrar-servers.com
rname: hostmaster.registrar-servers.com
serial: 1712423127
refresh: 43200
retry: 3600
expire: 604800
minimum-ttl: 3601

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

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

Información TXT
host: twsmail.com
class: IN
ttl: 1799
type: TXT
txt: protonmail-verification=a48c63911a7c8b731fb05b5c314e48ae6cbb1925
entries: Array

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