There are plenty, but most of us are too goddamn lazy to do it ourselves, and ask for an ORBS or MAPS like service to do it for us. We have ? NEVER had a spam problem (we've been here since 1994) going out - not > a single incident (not that we probably won't haqve one *someday*, but ? still, it's a hell of a good track record).
There aren't plenty of ways. If it were such an easy task, we would not be having this conversation.
The SPAM problem goes up and down to be sure, but you know what? PROCMAIL is your friend. All you need to look for are the basics (ADV, Make Money, etc) and you can instatly filter 90 percent of this trash into the bitbucket.
So lets see, I write an email to a client and use the words "make money" either in the header or in the body of the message... did someone all of a sudden give you the right to filter my mail based on content? Glad I don't have you doing my mail.
Lets get my position straight: I think spam is annoying as heel, and should not be done. I don't think that SPAM is going to cause any major social upheavals. I also disagree that all people want to be spared from SPAM, and with thaqt in mind, I believe everyone should defend themselves to the best of their interest, and leave the next guy alone: he or she probably has *way* more important things to worry about.
SPAM is a major problem. It is causing large ISPs and SP a great deal of money and resources. Why should I have to spend my hard earned profits purchasing filtering solutions like Brightmail. If there is an industry created due to problems dealing with SPAM, we have a big issue on our hands. Lets Make a List of Things we need to get done 1) World Peace 2) End to Hunger 3) Elimination of SPAM