Registro DMARC
v=DMARC1; p=reject; rua=mailto:sergey@f3.cool

Servidores DNS Principal (mname) y Secundario (rname)
host: f3.cool
class: IN
ttl: 900
type: SOA
mname: ns-1579.awsdns-05.co.uk
rname: awsdns-hostmaster.amazon.com
serial: 1
refresh: 7200
retry: 900
expire: 1209600
minimum-ttl: 86400

Servidor de Correo
host: f3.cool
class: IN
ttl: 86400
type: MX
pri: 5
target: alt2.aspmx.l.google.com

Servidor de Correo
host: f3.cool
class: IN
ttl: 86400
type: MX
pri: 5
target: alt1.aspmx.l.google.com

Servidor de Correo
host: f3.cool
class: IN
ttl: 86400
type: MX
pri: 10
target: alt4.aspmx.l.google.com

Servidor de Correo
host: f3.cool
class: IN
ttl: 86400
type: MX
pri: 10
target: alt3.aspmx.l.google.com

Servidor de Correo
host: f3.cool
class: IN
ttl: 86400
type: MX
pri: 1
target: aspmx.l.google.com

Información TXT
host: f3.cool
class: IN
ttl: 3600
type: TXT
txt: google-site-verification=tdrDi2J-0EVuU7t2jMohSAXb6nYA-LEDwNQkXCSDo_A
entries: Array

Información TXT
host: f3.cool
class: IN
ttl: 3600
type: TXT
txt: v=spf1 include:_spf.google.com -all
entries: Array