Servidores DNS Principal (mname) y Secundario (rname)
host: secook.com
class: IN
ttl: 600
type: SOA
mname: ns1.alidns.com
rname: hostmaster.hichina.com
serial: 2025121513
refresh: 3600
retry: 1200
expire: 86400
minimum-ttl: 600

Servidor de Correo
host: secook.com
class: IN
ttl: 600
type: MX
pri: 5
target: server-1757993832.cuiqiu.vip