Servidores DNS Principal (mname) y Secundario (rname)
host: smartcdn.co.uk
class: IN
ttl: 900
type: SOA
mname: ns-1722.awsdns-23.co.uk
rname: awsdns-hostmaster.amazon.com
serial: 1
refresh: 7200
retry: 900
expire: 1209600
minimum-ttl: 86400

Servidor de Correo
host: smartcdn.co.uk
class: IN
ttl: 600
type: MX
pri: 10
target: mail.smartcdn.co.uk

Información TXT
host: smartcdn.co.uk
class: IN
ttl: 3600
type: TXT
txt: v=spf1 mx:smartcdn.co.uk ip4:52.17.97.2 ip4:52.16.161.38 include:amazonses.com ~all
entries: Array