Registro DMARC
v=spf1 include:_spf.daum.net ~all

Registro DMARC
v=spf1 include:_spf.daum.net ~all

Registro IPv4
host: sjmlab.com
class: IN
ttl: 1722
type: A
ip: 203.245.44.49

Servidores DNS Principal (mname) y Secundario (rname)
host: sjmlab.com
class: IN
ttl: 1723
type: SOA
mname: sjmlab.com
rname: postmaster.sjmlab.com
serial: 20180903
refresh: 10800
retry: 3600
expire: 3600000
minimum-ttl: 43200

Servidor de Correo
host: sjmlab.com
class: IN
ttl: 1724
type: MX
pri: 10
target: ASPMX.daum.net

Servidor de Correo
host: sjmlab.com
class: IN
ttl: 1724
type: MX
pri: 20
target: ALT.ASPMX.daum.net

Información TXT
host: sjmlab.com
class: IN
ttl: 1724
type: TXT
txt: v=spf1 include:_spf.daum.net ~all
entries: Array

Información TXT
host: sjmlab.com
class: IN
ttl: 1724
type: TXT
txt: daum-verification:JucscoI2zo5bu3BGLDxNoA00
entries: Array