Servidores DNS Principal (mname) y Secundario (rname)
host: correo.com
class: IN
ttl: 1800
type: SOA
mname: alina.ns.cloudflare.com
rname: dns.cloudflare.com
serial: 2361559427
refresh: 10000
retry: 2400
expire: 604800
minimum-ttl: 1800

Servidor de Correo
host: correo.com
class: IN
ttl: 300
type: MX
pri: 0
target: mx.correo.com

Información TXT
host: correo.com
class: IN
ttl: 300
type: TXT
txt: sendinblue-code:6a60ccc6801c094d0b9d54e3016ae41a
entries: Array

Información TXT
host: correo.com
class: IN
ttl: 300
type: TXT
txt: v=spf1 include:spf.sendinblue.com mx ~all
entries: Array