Servidores DNS Principal (mname) y Secundario (rname)
host: playfield.com
class: IN
ttl: 10800
type: SOA
mname: a.dns.gandi.net
rname: hostmaster.gandi.net
serial: 1205693920
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 10800

Servidor de Correo
host: playfield.com
class: IN
ttl: 10800
type: MX
pri: 50
target: fb.mail.gandi.net

Servidor de Correo
host: playfield.com
class: IN
ttl: 10800
type: MX
pri: 10
target: spool.mail.gandi.net