Registro IPv4
host: solution-newsletter.com
class: IN
ttl: 900
type: A
ip: 94.23.14.220

Servidores DNS Principal (mname) y Secundario (rname)
host: solution-newsletter.com
class: IN
ttl: 900
type: SOA
mname: ns1.host7x24.com
rname: root.amen.fr
serial: 2019011111
refresh: 86400
retry: 7200
expire: 2592000
minimum-ttl: 300

Servidor de Correo
host: solution-newsletter.com
class: IN
ttl: 900
type: MX
pri: 10
target: mx1.solution-newsletter.com