Registro DMARC
v=DMARC1; p=quarantine; rua=mailto:report@nciyuan.net; ruf=mailto:report@nciyuan.net; aspf=s; adkim=s; fo=1

Servidores DNS Principal (mname) y Secundario (rname)
host: nciyuan.net
class: IN
ttl: 600
type: SOA
mname: vip1.alidns.com
rname: hostmaster.hichina.com
serial: 2017010108
refresh: 3600
retry: 1200
expire: 86400
minimum-ttl: 600

Servidor de Correo
host: nciyuan.net
class: IN
ttl: 600
type: MX
pri: 30
target: mx3.feishu.cn

Servidor de Correo
host: nciyuan.net
class: IN
ttl: 600
type: MX
pri: 10
target: mx1.feishu.cn

Servidor de Correo
host: nciyuan.net
class: IN
ttl: 600
type: MX
pri: 20
target: mx2.feishu.cn

Información TXT
host: nciyuan.net
class: IN
ttl: 600
type: TXT
txt: verification-code-site-App_feishu=7bqCtZn1oX9hOk6CreP5
entries: Array

Información TXT
host: nciyuan.net
class: IN
ttl: 600
type: TXT
txt: v=spf1 include:_netblocks.m.feishu.cn  ~all
entries: Array