Greywolf wrote:
> Let me get this straight...
> 
> "SPF is useless because tracing spam is useless, because even if we
> can trace it, we cannot filter on the discrepancies which would

SPF is very useless. See the SPF thread on qmail mailing list.
for more information. Markus proposed a better alternative.

-- 
Most people are other people. Their thoughts are someone else's opinions, their
lives a mimicry, their passions a quotation.
   -Oscar Wilde