Registro DMARC
v=DMARC1; p=none; fo=1; adkim=r; aspf=r; rf=afrf; sp=none

Registro IPv4
host: cursos24h.com.br
class: IN
ttl: 300
type: A
ip: 52.203.100.79

Servidores DNS Principal (mname) y Secundario (rname)
host: cursos24h.com.br
class: IN
ttl: 900
type: SOA
mname: ns-1517.awsdns-61.org
rname: awsdns-hostmaster.amazon.com
serial: 1
refresh: 7200
retry: 900
expire: 1209600
minimum-ttl: 86400

Servidor de Correo
host: cursos24h.com.br
class: IN
ttl: 3600
type: MX
pri: 10
target: mx01.cursos24h.com.br

Información TXT
host: cursos24h.com.br
class: IN
ttl: 300
type: TXT
txt: v=spf1 a mx ip4:52.55.130.214 ~all
entries: Array