Let the sender prove that he is indeed a human being and not a spamming machine by letting him recognize some distorted characters displayed as a png-image. This is hard for a machine to calculate and thus hinders automatic spamming. I think I already saw this on google or yahoo when you wanted to sign up for a new email account.
Okej, some extension to the smtp-protocol is then needed and this is somewhat inconvenient for the sender but the bussiness oportunities for a spamming company would be drastically worse if they had to have employees just do the pattern recognition for each email sent.
Slashdot Mirror
Let the sender prove that he is indeed a human being and not a spamming machine by letting him recognize some distorted characters displayed as a png-image. This is hard for a machine to calculate and thus hinders automatic spamming. I think I already saw this on google or yahoo when you wanted to sign up for a new email account.
Okej, some extension to the smtp-protocol is then needed and this is somewhat inconvenient for the sender but the bussiness oportunities for a spamming company would be drastically worse if they had to have employees just do the pattern recognition for each email sent.
Erik SjölundStockholm
Sweden