email - 是否有 "no-reply"电子邮件 header ？

Question

我经常看到自动电子邮件后缀有这样的消息
亚马逊:

*Please note: this e-mail was sent from an address that cannot accept incoming e-mail. Please use the link above if you need to contact us again about this same issue.

推特:

Please do not reply to this message; it was sent from an unmonitored email address. This message is a service email related to your use of Twitter.

谷歌结账:

Need help? Visit the Google Checkout help center. Please do not reply to this message.

在此警告的正下方，Gmail 向我显示了一个回复输入字段。在我看来，应该有某种标题可以附加到这种自动电子邮件中，告诉收件人的电子邮件客户端不允许回复。
有这样的标题吗？如果没有，控制电子邮件格式的团体是否曾经讨论过？

Answer 1

RFC 6854更新 RFC 5322允许在 From 中使用组构造领域(除其他外)。组可以为空，这可能是您见过的组语法的唯一使用方式:undisclosed-recipients:; .
Section 1 RFC 明确列出了在 From 中允许组构造的动机中的“无回复”。领域:

The use cases for the "From:" field have evolved. There are numerous instances of automated systems that wish to send email but cannot handle replies, and a "From:" field with no usable addresses would be extremely useful for that purpose.

它提供了以下示例: From: Automated System:;但是，在同一部分的末尾，RFC 还说:

This document recommends against the general use of group syntax in these fields at this time

在 section 3 ，RFC 澄清了 From 中的组语法字段仅适用于 Limited Use .
就个人而言，我认为不应该使用这种方法——除非我们确定所有相关客户端都以其他方式显示原始域(从 Return-Path 或新 header 重建)。否则，这会破坏域身份验证(SPF、DKIM 和 DMARC)的所有努力。引入一个额外的标题字段，使客户端简单地隐藏回复按钮对我来说似乎是更好的方法。
RFC 在 section 5 中对此方面的评论:

Some protocols attempt to validate the originator address by matching the "From:" address to a particular verified domain (for one such protocol, see the Author Domain Signing Practices (ADSP) document [RFC5617]). Such protocols will not be applicable to messages that lack an actual email address (whether real or fake) in the "From:" field. Local policy will determine how such messages are handled, and senders, therefore, need to be aware that using groups in the "From:" might adversely affect deliverability of the message.

多么失败的机会……