Hi, The following idea just hit me. How about a server which maintained a list of people who don't want to recive SPAM? The idea being that email recpients who don't want SPAM send their email address to the list. A SPAMer who want to check an email to see if it is on the list could then obtain the SHA-Digested list of addresses and remove them from their internal databases. Of course I don't for a moment imagine that this will be 100% effective. Without government regulation there will always be slimeballs who send mail to people who don't want it. The advantage of this scheme is that it would mean that the spam industry can avoid regulation pressure and they can deflect criticism. Meanwhile recipients of unwanted spam have a legitimate beef. Comments? Phill