yam issue tracker wrote:
This comes from RFC 2476, all of 11 years ago. We were a good deal less careful about UPDATES clauses then than we are now. (Sometimes I wonder if that's an improvement or the opposite.)#7: RFC 5321 Section 2.2.2: add a bullet for the definition of extensions -----------------------------------------+----------------------------------Reporter: sm+ietf at … | Owner: Type: defect | Status: new Priority: major | Milestone: Component: 5321bis-smtp-pre-evaluation | Version: Severity: - | Keywords: -----------------------------------------+----------------------------------Comment about RFC 5321 posted by Alessandro Vesely on 12 Nov 2009 Section 2.2.2: add a bullet for the definition of extensions. It should say that "Future SMTP extensions SHOULD explicitly specify if they are valid on the Submission port." [RFC 4409, Sect. 7] Rationale: not 100% sure, because while RFC 4409 says that, it doesn't formally update RFC 2821 (nor RFC 2476 updated RFC 1869.) http://www.ietf.org/mail-archive/web/yam/current/msg00164.html
I think it's a good idea to include some version of that sentence.
Harald
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