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

Registro IPv4
host: dukyoung.org
class: IN
ttl: 1800
type: A
ip: 203.245.24.6

Servidores DNS Principal (mname) y Secundario (rname)
host: dukyoung.org
class: IN
ttl: 1800
type: SOA
mname: dukyoung.org
rname: postmaster.dukyoung.org
serial: 20190823
refresh: 10800
retry: 3600
expire: 3600000
minimum-ttl: 43200

Servidor de Correo
host: dukyoung.org
class: IN
ttl: 1800
type: MX
pri: 10
target: rwebmail-034.fmcity.com

Información TXT
host: dukyoung.org
class: IN
ttl: 1800
type: TXT
txt: v=spf1 include:spf.fmcity.com ~all
entries: Array