Servidores DNS Principal (mname) y Secundario (rname)
host: chitron.com
class: IN
ttl: 300
type: SOA
mname: ns1.huaweicloud-dns.org
rname: hwclouds\.cs.huawei.com
serial: 1
refresh: 7200
retry: 900
expire: 1209600
minimum-ttl: 300

Servidor de Correo
host: chitron.com
class: IN
ttl: 300
type: MX
pri: 10
target: mail.chitron.com