Registro DMARC
v=spf1 ip4:211.34.104.37 ~all

Registro IPv4
host: cdsteel.Co.kr
class: IN
ttl: 259
type: A
ip: 203.245.24.17

Servidores DNS Principal (mname) y Secundario (rname)
host: cdsteel.Co.kr
class: IN
ttl: 1800
type: SOA
mname: cdsteel.Co.kr
rname: postmaster.cdsteel.Co.kr
serial: 20200304
refresh: 10800
retry: 3600
expire: 3600000
minimum-ttl: 43200

Servidor de Correo
host: cdsteel.Co.kr
class: IN
ttl: 1800
type: MX
pri: 10
target: rmw-002.fmcity.com

Información TXT
host: cdsteel.Co.kr
class: IN
ttl: 1800
type: TXT
txt: v=spf1 ip4:211.34.104.37 ~all
entries: Array