自建邮局/邮箱服务器发件的优化措施|防止进入垃圾箱

非常好用的监测工具:
https://talosintelligence.com/reputation_center/email_rep

需要添加的记录:

  1. SMTP服务器的A记录
  2. SMTP服务器的RDNS记录
  3. 发件域名的MX记录
  4. 发件域名的SPF记录
  5. 发件域名的DKIM记录
  6. 发件域名的DMARC记录

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