Registro DMARC
v=DMARC1; p=none;

Servidores DNS Principal (mname) y Secundario (rname)
host: tcplanejados.com.br
class: IN
ttl: 2560
type: SOA
mname: ns1.skymail.net.br
rname: hostmaster.tcplanejados.com.br
serial: 1719876728
refresh: 16384
retry: 2048
expire: 1048576
minimum-ttl: 2560

Servidor de Correo
host: tcplanejados.com.br
class: IN
ttl: 3600
type: MX
pri: 0
target: mx-ha.skymail.net.br

Información TXT
host: tcplanejados.com.br
class: IN
ttl: 3600
type: TXT
txt: v=spf1 include:spf.skymail.net.br -all
entries: Array