Registro DMARC
v=DMARC1; p=reject; rua=mailto:c2901b5a@in.mailhardener.com

Servidores DNS Principal (mname) y Secundario (rname)
host: jnr.cx
class: IN
ttl: 1800
type: SOA
mname: dahlia.ns.cloudflare.com
rname: dns.cloudflare.com
serial: 2416881224
refresh: 10000
retry: 2400
expire: 604800
minimum-ttl: 1800

Servidor de Correo
host: jnr.cx
class: IN
ttl: 300
type: MX
pri: 20
target: in2-smtp.messagingengine.com

Servidor de Correo
host: jnr.cx
class: IN
ttl: 300
type: MX
pri: 10
target: in1-smtp.messagingengine.com

Información TXT
host: jnr.cx
class: IN
ttl: 300
type: TXT
txt: v=spf1 include:spf.messagingengine.com include:sendgrid.net ~all
entries: Array

Información TXT
host: jnr.cx
class: IN
ttl: 300
type: TXT
txt: google-site-verification=DTo_1Zo3RwFVypLF5GMHSRQigoziqUOQRcnivlp8ERc
entries: Array