Registro DMARC
v=DMARC1; p=none; rua=mailto:dev@ad-blend.com;

Registro IPv4
host: castem.jp
class: IN
ttl: 21600
type: A
ip: 157.112.189.21

Servidores DNS Principal (mname) y Secundario (rname)
host: castem.jp
class: IN
ttl: 21600
type: SOA
mname: ns1.xserver.jp
rname: root.sv0.xserver.jp
serial: 0
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 3600

Servidor de Correo
host: castem.jp
class: IN
ttl: 21600
type: MX
pri: 0
target: castem.jp

Información TXT
host: castem.jp
class: IN
ttl: 3600
type: TXT
txt: v=spf1 +a:sv1020.xserver.jp +a:castem.jp +mx include:spf.sender.xserver.jp ~all
entries: Array