Registro DMARC
v=DMARC1; p=reject; rua=mailto:dmarc@spimco.com; pct=100; adkim=s; aspf=s

Servidores DNS Principal (mname) y Secundario (rname)
host: spimco.com
class: IN
ttl: 3601
type: SOA
mname: dns1.registrar-servers.com
rname: hostmaster.registrar-servers.com
serial: 1781876873
refresh: 43200
retry: 3600
expire: 604800
minimum-ttl: 3601

Servidor de Correo
host: spimco.com
class: IN
ttl: 3600
type: MX
pri: 10
target: mx.spimco.com

Información TXT
host: spimco.com
class: IN
ttl: 3600
type: TXT
txt: v=spf1 a mx ip4:79.137.196.34 ip4:138.124.113.122 -all
entries: Array