Hi all, In my draft, I add a new subject code of 8. Seems controversial. It is introduced in section 2, "Introducing the Anti-Spam Subject". Before commenting, please read RFC 3463.
In section 2 of RFC 3463, there is this sentence: A client must recognize and report class sub-code even where subsequent subject sub-codes are unrecognized. I realize "must" here isn't MUST, but it seems logical to me that one would code their system to handle unknown subject sub-codes. Even before that, the following paragraph makes it pretty clear that additional subject codes should be expected: New subject and detail codes will be added over time. Because the number space is large, it is not intended that published status codes will ever be redefined or eliminated. Clients should preserve the extensibility of the code space by reporting the general error described in the subject sub-code when the specific detail is unrecognized. So, with that, I can not see what controversy there could be. -- Jeff Macdonald Ayer, MA
