Servidores DNS Principal (mname) y Secundario (rname)
host: bfs.com
class: IN
ttl: 3600
type: SOA
mname: rns1.rightsdns.com
rname: domain.master.brights.jp
serial: 2021061001
refresh: 28800
retry: 7200
expire: 1209600
minimum-ttl: 86400

Servidor de Correo
host: bfs.com
class: IN
ttl: 3600
type: MX
pri: 10
target: custmx.cscdns.net