Servidores DNS Principal (mname) y Secundario (rname)
host: perseus.tufts.edu
class: IN
ttl: 1800
type: SOA
mname: dns-auth-prod-01.it.tufts.edu
rname: noc.tufts.edu
serial: 2020095097
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 7200

Servidor de Correo
host: perseus.tufts.edu
class: IN
ttl: 300
type: MX
pri: 5
target: ppagent-prod-01.uit.tufts.edu