Registro DMARC
v=DMARC1; p=reject; adkim=r; aspf=r; rua=mailto:dmarc_agg@vali.email,mailto:dmarc_rua@onsecureserver.net

Servidores DNS Principal (mname) y Secundario (rname)
host: concerteza.com
class: IN
ttl: 900
type: SOA
mname: ns-1654.awsdns-14.co.uk
rname: awsdns-hostmaster.amazon.com
serial: 1
refresh: 7200
retry: 900
expire: 1209600
minimum-ttl: 86400

Servidor de Correo
host: concerteza.com
class: IN
ttl: 300
type: MX
pri: 0
target: concerteza-com.mail.protection.outlook.com

Información TXT
host: concerteza.com
class: IN
ttl: 300
type: TXT
txt: MS=ms86235934
entries: Array

Información TXT
host: concerteza.com
class: IN
ttl: 300
type: TXT
txt: v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all
entries: Array