Servidores DNS Principal (mname) y Secundario (rname)
host: icfsrl.it
class: IN
ttl: 3600
type: SOA
mname: ns1-isp.aemcom.net
rname: hostmaster.aemcom.net
serial: 2019010800
refresh: 86400
retry: 7200
expire: 604800
minimum-ttl: 3600

Servidor de Correo
host: icfsrl.it
class: IN
ttl: 3600
type: MX
pri: 10
target: mx01.a2asmartcity.it

Servidor de Correo
host: icfsrl.it
class: IN
ttl: 3600
type: MX
pri: 20
target: mx02.a2asmartcity.it

Información TXT
host: icfsrl.it
class: IN
ttl: 3600
type: TXT
txt: v=spf1 include:mail.a2asmartcity.it ~all
entries: Array