Wednesday, March 26, 2003

New anti-spam service

ComputerWorld has this article about a new <A HREF="http://www.computerworld.com/softwaretopics/software/groupware/story/0,10801,79665,00.html">anti-spam service</A> from Mailblocks, Inc. The service uses a method called a challenged response, which sends a message asking the sender to type in a provided seven-digit number into a box in the email. Since only an authentic sender can type in the number correctly, and a computer-generated spam mailer can't issue such a response, the email is then perceived to be authentic and added to the recipient's accepted senders list.

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