Registro DMARC
v=DMARC1; p=quarantine; pct=40; rua=mailto:postmaster@elheraldo.co 

Registro IPv4
host: Elheraldo.co
class: IN
ttl: 3433
type: A
ip: 3.33.177.35

Registro IPv4
host: Elheraldo.co
class: IN
ttl: 3433
type: A
ip: 52.223.36.204

Servidores DNS Principal (mname) y Secundario (rname)
host: Elheraldo.co
class: IN
ttl: 3600
type: SOA
mname: nserver.calipso.com.co
rname: hostmaster.nserver.calipso.com.co
serial: 2024112001
refresh: 3600
retry: 1296000
expire: 1209600
minimum-ttl: 43200

Servidor de Correo
host: Elheraldo.co
class: IN
ttl: 3600
type: MX
pri: 10
target: ALT3.ASPMX.L.GOOGLE.COM

Servidor de Correo
host: Elheraldo.co
class: IN
ttl: 3600
type: MX
pri: 10
target: ALT4.ASPMX.L.GOOGLE.COM

Servidor de Correo
host: Elheraldo.co
class: IN
ttl: 3600
type: MX
pri: 1
target: ASPMX.L.GOOGLE.COM

Servidor de Correo
host: Elheraldo.co
class: IN
ttl: 3600
type: MX
pri: 5
target: ALT2.ASPMX.L.GOOGLE.COM

Servidor de Correo
host: Elheraldo.co
class: IN
ttl: 3600
type: MX
pri: 5
target: ALT1.ASPMX.L.GOOGLE.COM

Información TXT
host: Elheraldo.co
class: IN
ttl: 300
type: TXT
txt: google-site-verification=yOtCWR6DeqP7vSWUw3Nf1eFZk7M_dfC7L5tshyafBH0
entries: Array

Información TXT
host: Elheraldo.co
class: IN
ttl: 300
type: TXT
txt: v=spf1 include:_spf.mlsend.com include:_spf.elheraldo.co ip4:200.91.220.238 ip4:181.49.214.196 ip4:200.91.220.237 include:_spf.google.com include:spf.mandrillapp.com ~all
entries: Array