Registro DMARC
v=DMARC1; p=quarantine; sp=quarantine; rua=mailto:_dmarc@nimbus-cloud.com; ruf=mailto:_dmarc@nimbus-cloud.com; fo=1; aspf=r

Servidores DNS Principal (mname) y Secundario (rname)
host: nimbus-cloud.com
class: IN
ttl: 1800
type: SOA
mname: cris.ns.cloudflare.com
rname: dns.cloudflare.com
serial: 2344334479
refresh: 10000
retry: 2400
expire: 604800
minimum-ttl: 1800

Servidor de Correo
host: nimbus-cloud.com
class: IN
ttl: 300
type: MX
pri: 0
target: inbound-smtp.eu-west-1.amazonaws.com

Información TXT
host: nimbus-cloud.com
class: IN
ttl: 300
type: TXT
txt: v=spf1 include:amazonses.com ~all
entries: Array