V2EX mailer-daemon

Mailer-Daemon

释义 Definition

mailer-daemon:指邮件系统中的“邮件守护进程/退信机器人”,常见于退信(bounce)邮件的发件人或邮件头中,用来自动发送投递失败通知(如地址不存在、邮箱满、服务器拒收等)。

发音 Pronunciation

/melr dimn/

例句 Examples

The email came back from mailer-daemon.
这封邮件被退回了,发件人显示为 mailer-daemon。

After the server migration, hundreds of messages were rejected, and mailer-daemon sent detailed bounce reports explaining the SMTP errors.
服务器迁移后,数百封邮件被拒收,mailer-daemon 自动发来了详细的退信报告,解释了 SMTP 错误原因。

词源 Etymology

mailer 表示“邮件发送程序/邮件系统”,daemon 源自计算机术语“守护进程”(在后台持续运行的程序)。两者组合后,mailer-daemon 就指负责邮件投递相关后台任务、尤其是生成并发送退信通知的系统进程/账号。词形中常见连字符,属于类 UNIX/邮件系统传统命名方式。

相关词 Related Words

文献与作品 Literary / Notable Works

  • *RFC 5321: Simple Mail Transfer Protocol (SMTP)*(邮件传输协议标准文本中讨论退信/投递状态等机制,语境常与 mailer-daemon 类系统角色相关)
  • sendmail Installation and Operation Guide(sendmail 官方/权威文档中涉及邮件守护进程、退信与错误回执处理)
  • DNS and BIND(O’Reilly,讨论邮件系统与域名解析问题时常涉及退信与投递失败场景,实务语境里常见 mailer-daemon)
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