Registro DMARC
v=DMARC1; p=reject

Registro IPv4
host: btgroup.mx
class: IN
ttl: 300
type: A
ip: 143.110.149.61

Servidores DNS Principal (mname) y Secundario (rname)
host: btgroup.mx
class: IN
ttl: 1800
type: SOA
mname: hank.ns.cloudflare.com
rname: dns.cloudflare.com
serial: 2340522148
refresh: 10000
retry: 2400
expire: 604800
minimum-ttl: 1800

Servidor de Correo
host: btgroup.mx
class: IN
ttl: 300
type: MX
pri: 10
target: mx2.emailsrvr.com

Servidor de Correo
host: btgroup.mx
class: IN
ttl: 300
type: MX
pri: 0
target: mx1.emailsrvr.com

Información TXT
host: btgroup.mx
class: IN
ttl: 300
type: TXT
txt: v=spf1 +a +mx +ip4:167.89.7.65 ip4:213.32.147.163 include:emailsrvr.com include:u23062568.wl069.sendgrid.net include:em4762.btgroup.mx include:mars.spacemail.io -all
entries: Array

Información TXT
host: btgroup.mx
class: IN
ttl: 300
type: TXT
txt: google-site-verification=2udmwMI4Ed6LZSXpAgyttiyN3tmSJqEoS10DakzP0PI
entries: Array