Comments:

There should be scripting technology that would check and verify and that e-mail sender address is complete and accurate. If it were not accurate, the mail should be sent back to sender. Secondly, there is also ways of programming or limiting the amount of spam being generated. Give set amount that a spammer can e-mail. For example, a spammer can only generate one hundred e-mails per hour, after that, the e-mail capabilities would be disabled. Thirdly, make spammers to register or pay a fee. The fee could be set up for as little as ten cents for each spam. Fourth, set up a database reciever for any spamed recipients can forward to the database. The database could be scripted to check for reacurring e-mails. Setting a predifined limit or a limit that may be considered chronic spam, should give a understanding of whom is the top spammer. Lastly, the amount of time to taken of the server or database could be one hour. Having the correct programming in the database or spam generater should honor opt-out requests immediatly.