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

Registro IPv4
host: sysworks.co.kr
class: IN
ttl: 778
type: A
ip: 183.111.182.216

Servidores DNS Principal (mname) y Secundario (rname)
host: sysworks.co.kr
class: IN
ttl: 779
type: SOA
mname: sysworks.co.kr
rname: postmaster.sysworks.co.kr
serial: 20170628
refresh: 10800
retry: 3600
expire: 3600000
minimum-ttl: 43200

Servidor de Correo
host: sysworks.co.kr
class: IN
ttl: 780
type: MX
pri: 10
target: wmx.ecounterp.com

Información TXT
host: sysworks.co.kr
class: IN
ttl: 780
type: TXT
txt: v=spf1 mx include:spf.ecounterp.com ~all
entries: Array