On Sun, 25 Oct 2009, Adam Katz wrote:
Yao Ziyuan wrote:
I propose an optional feature for current mail systems. The main idea
is if a message is considered spam, this spam status can be tracked by
the sender (but not sent to him directly, as the From field can be
faked). The message can be re-marked as "not spam" if the sender can
solve a CAPTCHA.
How does this differ from challenge-response filtering?
http://en.wikipedia.org/wiki/Challenge-response_spam_filtering
It does not send a challenge. Read the rest of the proposal.
--
John Hardin KA7OHZ http://www.impsec.org/~jhardin/
[email protected] FALaholic #11174 pgpk -a [email protected]
key: 0xB8732E79 -- 2D8C 34F4 6411 F507 136C AF76 D822 E6E6 B873 2E79
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Gun Control: The theory that a woman found dead in an alley, raped
and strangled with her panty hose, is somehow morally superior to
a woman explaining to police how her attacker got that fatal bullet
wound. -- L. Neil Smith
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16 days since President Obama won the Nobel "Not George W. Bush" prize
