SV: Whitelists instead of SRS

> > Current legitimate forwarders use forged "from" to accomplish
> > the forward and preserve bounce information.
> That isn't forgery because the forwarder is acting legitimately on behalf
> of the correspondents.
With SPF, you simply state, "which servers may act legitimately". If you 
include the forwarder, it's legitimately. If not, it's not.

Lars.