> Anyone who wants can forge
> email header, which can cause you to bounce your spam to anyone else
> in the world.
>
> That is also not true, at least for me. I have TMDA configured to
> generate challeges only for messages not flagged as spam by a Bayesian
> filter. So only those spams that could get through a "proper spam
> solution" will generate blowback.
I don't know anything about TMDA, but reading your explanation
I gather the following:
(1) You filter your email through a regular spam filter.
(2) If it doesn't look like spam, but its not from an address
that TMDA recognizes, TMDA will generate a challenge email.
The resulting conclusion includes what you said above,
as well as the following:
(A) You acknowlege that spam may get through your Bayesian spam filter
(B) You acknowlege that said spam from (A) will generate blowback.
(C) You give the appearance of realizing (A) and (B) are true,
(D) and you give the appearance of having made the decision that
(i) sending some blowback spam to someone else is better than
(ii) getting spam in your own inbox.
You solve your own problems by creating a potential new
problem for everyone else.
Assuming I understand what you've said about TMDA,
I can see why this software generates such strong and
visceral reactions in people.
Greg
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