Smtp

RFC5321“接收方應檢查………回复程式碼”(為什麼?)

  • December 10, 2014

在 SMTPcommands中由 發送,sender並且responses所有以數字開頭的code都由 發送receiver

但是有一點:

RFC5321 sec4.2

Whenever possible, a receiver-
SMTP SHOULD test the first digit (severity indication) of the reply
code.

嗯?這是 RFC 中的錯誤嗎?他們的意思是sender而不是receiver

下一段他們說sender

Consequently, a sender-SMTP MUST be prepared to handle codes not
specified in this document and MUST do so by interpreting the first
digit only.

有點道理,

對我來說似乎是一個錯字。送出勘誤表

引用自:https://serverfault.com/questions/650411