On Feb 11, 2008 11:10 AM, Ryan Simpkins <[EMAIL PROTECTED]> wrote: > > 2) A VIP sends an e-mail. Your system sends an automated reply with a > simple > step a VIP has to follow to ensure they get past the filter.
Once upon a time, automated challenge/response systems were considered counter-productive if not downright harmful. Google "challenge response harmful" (unquoted) to get an eyeful. Having been repeatedly victimized by C/R systems, my main objection to them is that they enable and encourage joe-job (spoofed sender) attacks in which innocent victims are attacked by bogus challenges from C/R systems. Is the "harmful" characterization no longer applicable to C/R systems? If so, why? Chris /* PLUG: http://plug.org, #utah on irc.freenode.net Unsubscribe: http://plug.org/mailman/options/plug Don't fear the penguin. */
