Challenge/Response is a specific type of email filter. If you use a Challenge/Response (C/R) spam filter to protect yourself from spam, here's what happens: Your email server or service rece…
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At least one mailing list operator on Mailop is reporting that he's receiving mail from something called BitBounce. It sounds like some combination of crypto-currency based &…
A few weeks ago, somebody on the Mailop list asked about an email they received. Turns out, it was a Challenge/Response spam filter. You know, one of those emails from a robot th…
Here's my take on it, and here's John Levine's take . I really like John's breakdown of the clickwrap license issue and detail on how the parties included email a…
Richi Jennings breaks it down: Peter Brockman, and open questions on C/R success rate determination methodology. As Richi puts it, "Statistics aside, asking C/R users if …
Q: Is challenge/response a well respected spam prevention/spam blocking methodology? A: NO . Heh.
Over here , I help answer a question about Challenge/Response filters, in MediaPost's EmailInsider newsletter. I was already a reader before the "E-mail Diva" rea…
