Servidores DNS Principal (mname) y Secundario (rname)
host: mednet.fr
class: IN
ttl: 14400
type: SOA
mname: ns1.osupytheas.fr
rname: dns.osupytheas.fr
serial: 2021070101
refresh: 28800
retry: 7200
expire: 604800
minimum-ttl: 14400

Servidor de Correo
host: mednet.fr
class: IN
ttl: 14400
type: MX
pri: 20
target: smtp.osupytheas.fr