Servidores DNS Principal (mname) y Secundario (rname)
host: inferir.com.br
class: IN
ttl: 900
type: SOA
mname: d.sec.dns.br
rname: hostmaster.registro.br
serial: 2025137000
refresh: 86400
retry: 900
expire: 604800
minimum-ttl: 900

Servidor de Correo
host: inferir.com.br
class: IN
ttl: 3600
type: MX
pri: 1
target: aspmx.l.google.com