Registro DMARC
v=spf1 include:spf.titan.email ~all

Registro IPv4
host: my-cst.com
class: IN
ttl: 300
type: A
ip: 192.0.78.222

Registro IPv4
host: my-cst.com
class: IN
ttl: 300
type: A
ip: 192.0.78.186

Servidores DNS Principal (mname) y Secundario (rname)
host: my-cst.com
class: IN
ttl: 21600
type: SOA
mname: ns1.wordpress.com
rname: hostmaster.wordpress.com
serial: 2005071858
refresh: 14400
retry: 7200
expire: 604800
minimum-ttl: 300

Información TXT
host: my-cst.com
class: IN
ttl: 3600
type: TXT
txt: v=spf1 include:spf.titan.email ~all
entries: Array