Registro DMARC
v=DMARC1; p=quarantine; rua=mailto:dmarcreport@mail.com

Registro IPv4
host: null.net
class: IN
ttl: 20660
type: A
ip: 3.33.243.145

Servidores DNS Principal (mname) y Secundario (rname)
host: null.net
class: IN
ttl: 20660
type: SOA
mname: pdns1.ultradns.net
rname: ggorman.easylink.com
serial: 2013013025
refresh: 10800
retry: 3600
expire: 2592000
minimum-ttl: 86400

Servidor de Correo
host: null.net
class: IN
ttl: 20660
type: MX
pri: 10
target: mx01.mail.com

Servidor de Correo
host: null.net
class: IN
ttl: 20660
type: MX
pri: 10
target: mx00.mail.com

Información TXT
host: null.net
class: IN
ttl: 20660
type: TXT
txt: v=spf1 redirect=_spf.mail.com
entries: v=spf1 redirect=_spf.mail.com