Dream on.
Legite ISP's will do that, but most spammers hide their tracks. Beside, look at some of the addresses, it includes something like bounce@domain.com. If you bounce those, they bounce back.
Also, most spammers host their own mailserver at site who do not care, they actually trive on spam. You cannot stop them with antispam. All you can do is filter.
But, you will never stop the generated traffic and if you bounce, you even generate more.
And I know, I work at a security co. , we produce firewalls, antspam, antivirus and the likes, we handle those nasty things every single day. Spamfilters filter, and that is as far as you get.
The recent laws are all fine, we have them too, but trace the real die hard spammers IP (or mailserver) and you end up in some exotic country, no local laws will touch them there. If 'something' 'somewhere' gives 'some' error, excpect random guesses or no replies at all. Please specify details.
Free Tip: The F1 Key does NOT destroy your PC! - Marc