Re: [EAI] double angle brackets

[Ernie Dainow <edainow at ca.afilias.info>]

Shawn Steele wrote:
> > (From: EAI for user 1, ASCII for user 2)
> >
> > This case would have a Reply-To with the EAI address, so the multiple 
> >  From fields are not used.
> >     
>
> I don't think you understood me correctly.  I'm saying if I wanted the mail to be "From: billg at microsoft.com, steveb at microsoft.com" when Bill had an EAI address and Steve did not, then it'd be confused with an EAI downgrade format.
>   
Can you actually compose mail like this with your email system? The 
assumption was that multiple From addresses are not widely used and are 
not generally a feature that users can utilize.The proposal was not to 
make the use of multiple From fields available for general use. The From 
headers would be generated automatically specifically to carry the 
downgrade information.
> I also don't see how Reply-To: helps.  If Reply-To: always has the EAI fallback path, then it can't be used normally.
>   
If you don't want the Reply-To to be your EAI address, I don't see any 
reason you couldn't change it, or add additional addresses. This header 
would need to be made available to the user composing the email, with 
its default being the EAI address.
>   
> > As part of the downgrade simplification, we are proposing to drop
> > support for downgrade of forward pointing addresses such as To:, Cc:.If
> > someone gives you an EAI address, the assumption is that their email
> > system can receive EAI email.If their system cannot receive EAI email,
> > it is a 'configuration' error on their end and they shouldn't be giving
> > out an EAI address until they are ready to receive such mail.
> >     
>
> If I send email from an EAI aware account to 10 other EAI aware users, then that's great.  (Like on a list like this).  If someone replies-all, everything works fine.
>
> Now if I add one non-EAI aware user, unless To: & Cc: are fixed, then that person can't reply-all.  In fact I guess all the other addresses have to be dropped for downgrade (or the mail fails)  If they replied-all, they'd get me presumably because of From, but all the other users would fail.  I use Reply-All more than reply.  That's how I replied to this mail in fact.
>
> I'm not sure how much good it does to "fix" from if the others can't be fixed as well.
>   
This is the "triangle" case raised by Harald. As noted, there may have 
to be trade offs in achieving simplification over complexity. This may 
be one of those cases that we have to consider giving up.
> -Shawn