Registro DMARC
v=DMARC1; p=none

Registro IPv4
host: lessontoday.com
class: IN
ttl: 300
type: A
ip: 151.101.2.159

Servidores DNS Principal (mname) y Secundario (rname)
host: lessontoday.com
class: IN
ttl: 300
type: SOA
mname: ns1.systemdns.com
rname: hostmaster.systemdns.com
serial: 1710859717
refresh: 10800
retry: 3600
expire: 1209600
minimum-ttl: 60

Servidor de Correo
host: lessontoday.com
class: IN
ttl: 300
type: MX
pri: 10
target: mx.lessontoday.com.cust.a.hostedemail.com