Re: Intent to revive "expires" header from draft-ietf-mailext-new-fields-15

Jeff Macdonald wrote:
> Neither of these does what I'd like. I need a mode that is like R but
> will deliver to MTAs that do not support DELIVERYBY. This way the
> originating can expire messages and doesn't have to worry if the rest of
> the world supports DELIVERYBY.
>
> Unless of course I am mis-understanding section 4.1.4. I'm not sure how
> a sending MTA knows it is sending email to a relay. I'm assuming all
> receiving MTAs could be a relay.
Sending to a smart host?


-- 
HLS