[Malcolm]

Why can't they develop a system that returns the spammail to the sender without opening it, and gives a message not to e-mail that address again, and this be legally binding? If from outside the US, a filter for that as well. This is a problem that is too easily solved, yet no one is doing anything substantive about it. Makes you wonder why the ISPs tolerate it. Under the table bribes? There is something wrong here, as the solution is so simple, yet everyone seems baffled.....

[woofer]

Why can't they develop a system that returns the spammail to the sender without opening it,

They do and some are quite good at deleting and bouncing spam message from your mail server. I currently use "Mailwasher" ahead of Outlook. I don't see any spam, and every one that makes it to my server gets checked against a dozen blacklists, deleted from the server and then is bounced back to the sender as undeliverable due to "no such address".