邮件服务器
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邮件服务器是使用标准协议发送和接收电子邮件的软件或基础设施：用于服务器间发件的SMTP（简单邮件传输协议）、用于客户端同步的IMAP（Internet邮件访问协议）以及用于客户端下载的POP3（邮局协议）。每个接收邮件的域名必须至少有一条[[mx-record|MX记录]]指向邮件服务器主机名。以IP和发件域跟踪的邮件服务器信誉决定了邮件能否进入收件箱。通过[[spf-record|SPF]]、[[dkim|DKIM]]和[[dmarc|DMARC]]记录进行正确认证，是防止[[domain-abuse|欺骗]]和维持投递率的必要手段。
示例
Google Workspace acts as a mail server for your custom domain: add Google's MX records, then configure SPF, DKIM, and DMARC records to authenticate mail sent as [email protected].