>It turns out there is another RFC, the number escapes me at the moment,
>it might be 850, that defines another header field we have not used yet.
>It will solve the problem of USER MAIL AGENTS saving messages in the
>correct notebooks.  That field is called  NEWSGROUP:  (or is it NEWSGROUPS)
>I will look for it and post here.  It should identify the list as a full
>address, userid and node.
That's right number, and it refers to the headers used by USENET.  While
putting the list name in a Newsgroup: header would solve some problems,
I suspect it would cause others, particularly where people have written
RFC822 specific mail handlers, which complain about invalid (i.e., not
in RFC-822, and not X-) headers.