Registro DMARC
aa

Registro IPv4
host: agtelecom.com
class: IN
ttl: 86400
type: A
ip: 127.0.0.1

Servidores DNS Principal (mname) y Secundario (rname)
host: agtelecom.com
class: IN
ttl: 90
type: SOA
mname: localhost
rname: 1
serial: 86400
refresh: 86400
retry: 86400
expire: 86400
minimum-ttl: 3600

Servidor de Correo
host: agtelecom.com
class: IN
ttl: 90
type: MX
pri: 300
target: localhost

Información TXT
host: agtelecom.com
class: IN
ttl: 86400
type: TXT
txt: aa
entries: Array