Registro DMARC
v=spf1 ip4:185.143.240.136 ~all

Servidores DNS Principal (mname) y Secundario (rname)
host: grussco.com
class: IN
ttl: 3600
type: SOA
mname: ns-1218.awsdns-24.org
rname: awsdns-hostmaster.amazon.com
serial: 1
refresh: 7200
retry: 900
expire: 1209600
minimum-ttl: 86400

Servidor de Correo
host: grussco.com
class: IN
ttl: 3600
type: MX
pri: 0
target: contact.grussco.com

Información TXT
host: grussco.com
class: IN
ttl: 3600
type: TXT
txt: v=spf1 ip4:185.143.240.136 ~all
entries: Array