在SMTP中,commands由sender和responses发送,它们都以数字code开头,由receiver发送。
但还有一点是:
RFC5321 sec4.2
Whenever possible, a receiver-
SMTP SHOULD test the first digit (severity indication) of the reply
code.哈?这是RFC中的错误吗?他们是指sender而不是receiver吗?
下一段他们说是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.这一点很有道理,
发布于 2014-12-10 00:07:49
在我看来是个错误。提交勘误表。
https://serverfault.com/questions/650411
复制相似问题