Norm Walsh describes his anti-spam setup, which seems pretty smart. Still, I have decided that setting everything up this way, and more importantly, maintaining it, is too much work for my taste — so I’ll take the opportunity to once again recommend AppRiver, a anti-spam and anti-virus service provider. The way to use it to simply change one’s DNS MX record, and mail gets filtered and then forwarded to the destination email servers. Although we struggled with some initial problems a while back, we’re totally happy that 90% (and, more importantly, the right 90%) of our email doesn’t even reach our servers. This is definitely the future — no software to set up, nothing to maintain, great results, and a free trial to check whether it’s worth it.