Thus said Ken Hornstein on Tue, 24 Feb 2026 11:03:49 -0500: > "Apparently"? I mean, it seems very unambiguous to me.
Well, to be fair, the word "apparent" has multiple meanings, usually indicating clarity, such as "clear or obvious". For example, "it is apparent to all who read RFC 5322, that only one each of To and Cc header are allowed." But I agree that it's unambiguous that there can be only one of certain and specific headers. > I'm not surprised things don't clean that up, because by that point the > assumption is that you're getting a compliant message. Yeah, kind of difficult to decide where such boundaries exist. As I mentioned, my MSA (new-inject, or ofmipd, from the mess822 program[1]) cleans up various things in the headers to make them compliant, regardless of which MUA is being used to draft the messages. [1] https://cr.yp.to/mess822.html Cheers, Andy
