SV: Whitelists instead of SRS

> > With SPF, you simply state, "which servers may act legitimately".
> > If you include the forwarder, it's legitimately. If not, it's not.
> You don't normally list a forwarder as a designated sender in an SPF record.
Exactly. Which is why a forwarder cannot normally legitimately send messages on 
behalf of that e-mail address. Which is also why SRS or whitelisting of the 
forwarder is needed.

Lars.