Registro DMARC
v=spf1 mx include:mailplug.com ~all

Registro IPv4
host: el-systems.co.kr
class: IN
ttl: 1800
type: A
ip: 210.114.6.204

Servidores DNS Principal (mname) y Secundario (rname)
host: el-systems.co.kr
class: IN
ttl: 1800
type: SOA
mname: el-systems.co.kr
rname: postmaster.el-systems.co.kr
serial: 20210615
refresh: 10800
retry: 3600
expire: 3600000
minimum-ttl: 43200

Servidor de Correo
host: el-systems.co.kr
class: IN
ttl: 1800
type: MX
pri: 20
target: mx02.mailplug.com

Servidor de Correo
host: el-systems.co.kr
class: IN
ttl: 1800
type: MX
pri: 10
target: mx01.mailplug.com

Información TXT
host: el-systems.co.kr
class: IN
ttl: 1800
type: TXT
txt: v=spf1 mx include:mailplug.com ~all
entries: Array