Registro DMARC
v=DMARC1; p=reject; sp=reject

Servidores DNS Principal (mname) y Secundario (rname)
host: astringedent.info
class: IN
ttl: 3600
type: SOA
mname: ns69.domaincontrol.com
rname: dns.jomax.net
serial: 2025061102
refresh: 28800
retry: 7200
expire: 604800
minimum-ttl: 600

Servidor de Correo
host: astringedent.info
class: IN
ttl: 3600
type: MX
pri: 0
target: 

Información TXT
host: astringedent.info
class: IN
ttl: 3600
type: TXT
txt: v=spf1 -all
entries: Array