Registro DMARC
v=DMARC1; p=none;fo=1;rua=mailto:dmarc@ctb.edu.co;ruf=mailto:dmarc@ctb.edu.co

Registro IPv4
host: ctb.edu.co
class: IN
ttl: 300
type: A
ip: 178.18.241.153

Servidores DNS Principal (mname) y Secundario (rname)
host: ctb.edu.co
class: IN
ttl: 1800
type: SOA
mname: brynne.ns.cloudflare.com
rname: dns.cloudflare.com
serial: 2394209757
refresh: 10000
retry: 2400
expire: 604800
minimum-ttl: 1800

Servidor de Correo
host: ctb.edu.co
class: IN
ttl: 300
type: MX
pri: 5
target: alt2.aspmx.l.google.com

Servidor de Correo
host: ctb.edu.co
class: IN
ttl: 300
type: MX
pri: 10
target: alt3.aspmx.l.google.com

Servidor de Correo
host: ctb.edu.co
class: IN
ttl: 300
type: MX
pri: 1
target: aspmx.l.google.com

Servidor de Correo
host: ctb.edu.co
class: IN
ttl: 300
type: MX
pri: 5
target: alt1.aspmx.l.google.com

Servidor de Correo
host: ctb.edu.co
class: IN
ttl: 300
type: MX
pri: 10
target: alt4.aspmx.l.google.com

Información TXT
host: ctb.edu.co
class: IN
ttl: 300
type: TXT
txt: v=spf1 a mx a:ctb.edu.co ip4:178.18.241.153 ~all
entries: Array