Re: [EAI] I-D Action: draft-ietf-eai-mailinglistbis-00.txt

[John C Klensin <[e-mail]>]

--On Thursday, November 24, 2011 11:09 -0500 "John R. Levine"
<[e-mail]> wrote:

>>>> Where does using a percent-encoded instead of a punycoded
>>>> <ihost> help wrt mailing lists?  So far I think you can
>>>> either keep UTF-8 "as is" or "get it right" (= 3987 + 5890).
> 
> You can't keep it as is in a downgraded message.  How about if
> I just say that you have to do something in downgraded
> messages, the obvious approach of leaving it in UTF-8 in EAI
> messages doesn't work there, and all of the currently proposed
> alternatives have problems.

For the current round, ok.   In the slightly longer term, I
think we should draw from the experience of pop-imap-downgrade
(and the earlier downgrading work on which it is based) and
think of modifying the message to suppress the address and then
use encoded words for the relevant content (since we know that
"?=foo?Q?gibberi=FF" is a perfectly valid local-part).   

See draft-klensin-encoded-word-type-u (in posting queue) as the
basis for a discussion if we want to take a slightly different
direction with this.

   john