On Tue, 10 Apr 2007, Magnus Holmgren wrote:
> On Tuesday 10 April 2007 12:25, Tony Finch wrote:
> >
> > It's unreasonable to expect users to do this.
>
> Not more so than expecting them to choose good passwords...(?)
Worse than that. Hopeless.
> 1. U tells A to forward mail to user+whatever@???
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.
> > 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.
Tony.
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