On Tuesday 10 April 2007 13:13, Tony Finch wrote:
> U will not have the slightest idea that user+whatever@???
> exists. A will not give the slightest suggestion to U that their usual
> user@??? will not work for forwarding.
Oh come on. It's not *that* impossible for B to get the information to U, for
example by dropping them a mail or putting it in a prominent place among the
information they have to read when signing up. You could even make the system
intelligent enough that it detects suspected forwardings and tells the user
what to do, not blocking the mail until some time has passed.
> > > That's remarkably optimistic.
> >
> > You'd of course make sure that you stay on the safe (false negative)
> > side.
>
> Yes, by shunning SPF since it's utterly misguided.
That's remarkably pessimistic.
--
Magnus Holmgren holmgren@???
(No Cc of list mail needed, thanks)
