3 ms·

If it was unimportant it would be MAY.

• hsbauauvhabzb 8mo ago
  Is the server somehow unable to inject an ID if the sender did not send one? Stop hiding behind policy and think for yourself.
  • geocar 8mo ago
    > Is the server somehow unable to inject an ID if the sender did not send one? Yes. https://www.rfc-editor.org/rfc/rfc2821#section-6.3 https://www.rfc-editor.org/rfc/rfc2821#section-6.3 refers to servers that do this and says very clearly: These changes MUST NOT be applied by an SMTP server that provides an intermediate relay function. That's Google in this situation. > Stop hiding behind policy and think for yourself. Sometimes you should think for yourself, but sometimes, and friend let me tell you this is one of those times, you should take some time to read all of the things that other people have thought about a subject, especially when that subject is as big and old as email. There is no good reason viva couldn't make a Message-ID, but there's a good reason to believe they can't handle delivery status notifications, and if they can't do that, they are causing bigger problems than just this.
  • behringer 8mo ago
    You want me to think for myself when writing an email server that interoperates with other email servers? Are you just clueless?