william@elan.net writes: > I totally agree. No kind of filtering (and I have significant experience > in this) works to stop spam. > > I already said this on nanog, in my opinion we need to develop system > that allows ISP mail servers to identify and certify each other (most > likely though chained certificates, I don't think that will work either. It fails the robustness test -- it is too easy for a system like that to fail. I think among other things it is time that we started treating stealing other people's open relays for purposes of forwarding commercial email as what it probably is -- a felony. That won't help, though, so long as no one attempts to prosecute it. Perry