EarthLink to Offer Anti-Spam E-Mail System' - Challenge-Response' Technology Rejects Messages Unless Senders Are Cleared by Recipients,
By Jonathan Krim, Washington Post Staff Writer
Wednesday, May 7, 2003; Page E01


"A system that backers claim will eliminate e-mail spam is about to be deployed by a major Internet service provider, giving a boost to an emerging technology that if widely adopted would change how people communicate online. . . . Known as "challenge-response" technology, the system thwarts the ability of spammers to reach their intended audience with millions of automatically generated e-mails. When someone sends an e-mail to a challenge-response user, he or she gets an e-mail back asking to verify that the sender is a live person. " [more]