Registro DMARC
v=DMARC1; p=reject;

Servidores DNS Principal (mname) y Secundario (rname)
host: backupacronis.com
class: IN
ttl: 19849
type: SOA
mname: idn1.acronis.com
rname: hostmaster.acronis.com
serial: 2021053000
refresh: 86400
retry: 1800
expire: 1814400
minimum-ttl: 3600

Servidor de Correo
host: backupacronis.com
class: IN
ttl: 1849
type: MX
pri: 0
target: 

Información TXT
host: backupacronis.com
class: IN
ttl: 1849
type: TXT
txt: v=spf1 -all
entries: Array