Registro DMARC
v=DMARC1; p=none; rua=mailto:admin@app4chat.com.br

Registro IPv4
host: app4chat.com.br
class: IN
ttl: 90
type: A
ip: 173.249.13.59

Servidores DNS Principal (mname) y Secundario (rname)
host: app4chat.com.br
class: IN
ttl: 300
type: SOA
mname: ns1.p201.dns.oraclecloud.net
rname: hostmaster.app4chat.com.br
serial: 2
refresh: 3600
retry: 600
expire: 604800
minimum-ttl: 1800

Servidor de Correo
host: app4chat.com.br
class: IN
ttl: 90
type: MX
pri: 0
target: srv.npibrasil.net