on Mon, Sep 22, 2003 at 05:04:47PM -0700, Robin Lynn Frank ([EMAIL PROTECTED]) wrote: > On Monday 22 September 2003 04:35 pm, Karsten M. Self wrote: > > As I have: > > > > http://kmself.home.netcom.com/Rants/challenge-response.html > > Remember that quote about, "lies, danm lies and statistics'? > > I checked that URL. You throw in a smattering of statistics and > pseudo-statistics and then make a whole boatload of assumptions.
I quantify my results with spamassassin. Messages received, spam identified, ham identified as spam, ham identified as ham, spam identified as ham. While I don't have the data behind those particular statistics, I have a current corpus of mail and spam, and can derive values which will be markedly similar. I can also point to independently derived statistics pointing to grossly similar results. > You want quantified data? Try this: > > We have been using TMDA since version 0.33. In a stock configuration? Or with additional spam and virus filtering prepending TMDA C-R challenge issuing? The latter case mitigates most of my complaints against TMDA specifically, but not C-R as a whole. > Percent of challenges to forged email addresses: 0.00 What's your basis for this statement? > Percent of challenges to joe-job victims: 0.00 Again, how do you assess this? > Percent of challenges to someone other than the initial sender: 0.00 Again, how do you assess this? You're missing a statistic: challenges not responded to. Since you've already established that each of your challenges was issued to a legitimate, non-spoofed address, It would seem that unanswered challenges would tend to be legitimate mail for which the challenge recipient elected not to comply with your system. > Now there is one thing you should ad to your web page. You should > include information that you have no skills as a sysadmin. You might > also want to add the assumption that you never will have. Do you really wish to libel me in public? Peace. -- Karsten M. Self <[EMAIL PROTECTED]> http://kmself.home.netcom.com/ What Part of "Gestalt" don't you understand? Defeat EU Software Patents! http://swpat.ffii.org/
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