Re: Update to RFC 5322 to allow "group" syntax in the "from" header

>In other words, I think the "Sender" should be required
>when a "From" header field specifies a group with an empty
>list of mailboxes.

This is a reasonable suggestion, except that the primary motivation
for this change is EAI messages downgraded by POP or IMAP delivery
agents.  If the addresses on the From: or Reply-To: line are
non-ASCII, there is no way for an ASCII MUA to display or reply to
them, so the idea is that the header will be rewritten to something
like this:

  From: an international address :;

So either there's an existing Sender header, which might itself need
to be downgraded, or there isn't, but either way there's no promise
that there is a non-ASCII address that could be put in the Sender.
So it's not gonna happen.

R's,
John

PS: EAI went around for years trying to come up with a general way to
allow non-ASCII mail software to read and reply to EAI messages, and
finally gave up.  See the experimental RFCs and the mailing list for
details.

-- 
Regards,
John Levine, [email protected], Primary Perpetrator of "The Internet for Dummies",
Please consider the environment before reading this e-mail. http://jl.ly
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