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

Registro IPv4
host: sb-net.co.kr
class: IN
ttl: 7200
type: A
ip: 203.245.24.29

Servidores DNS Principal (mname) y Secundario (rname)
host: sb-net.co.kr
class: IN
ttl: 7200
type: SOA
mname: ns9.dnszi.com
rname: root.dnszi.com
serial: 2021113001
refresh: 43200
retry: 3600
expire: 1209600
minimum-ttl: 7200

Servidor de Correo
host: sb-net.co.kr
class: IN
ttl: 7200
type: MX
pri: 10
target: wmx.ecounterp.com

Información TXT
host: sb-net.co.kr
class: IN
ttl: 7200
type: TXT
txt: v=spf1 mx include:spf.ecounterp.com ~all
entries: Array