How can you block SPAM?

Derek Pomery asks: "My personal address, which I have kept relatively pure, is slowly being overwhelmed. Procmail doesn't seem to be the solution, since most of the e-mail addresses are forged. Does anyone have any ideas on the problem? The only thing I can think of is checking to see if the domain is valid. However, besides sending a verification e-mail from a throw-away address to check for a bounce (which would be an annoying kind of return spam), I can't think of a way to check for an account's validity (unless finger is allowed). Anyone have any spam killing strategies? Particularly for the annoying forged spam? Just some simple method to deep-six anonymous e-mails into /dev/null "

Comments

Check To:

[HoserHead]

If the To: address doesn't contain your e-mail address, and it's not from a mailing list, chances are it can be filed away under 'spam.' The best idea would be to actually make a Spam directory or mail folder, somewhere to store mail that you probably won't ever want (so you can go through it every once and a while and pick up the mail that accidentally got filed there from bcc:s or other means).