Registro DMARC
v=DMARC1; p=none

Registro IPv4
host: express57.mx
class: IN
ttl: 21600
type: A
ip: 216.198.79.1

Servidores DNS Principal (mname) y Secundario (rname)
host: express57.mx
class: IN
ttl: 21600
type: SOA
mname: ns2.express57.mx
rname: soporte.sysop.com.mx
serial: 1770917899
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 10800

Servidor de Correo
host: express57.mx
class: IN
ttl: 21600
type: MX
pri: 10
target: mail.express57.mx

Información TXT
host: express57.mx
class: IN
ttl: 21600
type: TXT
txt: google-site-verification=4zM1cPTEWHv7M02uh1f-CsDryDmn1o7f6BeUEuoAbyM
entries: Array

Información TXT
host: express57.mx
class: IN
ttl: 21600
type: TXT
txt: _qt171p4o8o50k51trcjp7gh7oxn8l0c
entries: Array

Información TXT
host: express57.mx
class: IN
ttl: 21600
type: TXT
txt: v=spf1 a mx ip4:72.52.253.70 -all
entries: Array