> for me, there's one problem with this alternative to > the "stupid" spamhaus solution — it requires i run > a linux server.
It does not. There are content-based filters for Plan 9. Or I bet you could port many of the standard Unix ones over without much trouble. Mail Avenger is a little harder to replace, but still not very difficult. I said at the outset that you'd need to make a few changes to upas (specifically, the introduction of a validatemessage script). Finally, the mail server for swtch.com does run the software I mentioned, but it does not run Linux. > i never claimed that spamhaus is a panecea. but it > does solve a large portion of the problem for me > in a tiny shell script that runs on plan 9. > > whitelists can handle some unfortunate conflicts. and > at this point, i think managing a spamhaus exception > list is going to be easier than managing content > based filtering. Good luck. The vigilante lists are too easy to end up on incorrectly and too hard to get removed from, as Forsyth noted already. I've been on the wrong end of them too many times. If someone is using an RBL or a Barracuda box that thinks I'm a spammer, I don't spend the effort anymore to get my mail through. I just assume the person I'm emailing doesn't want my mail. (I do the same for people running the "please reply to this message with a magic token" scripts.) Russ