Speaking of spam, how have other people been doing since the earlier discussion on greylisting and/or blocklists?
For myself, I've seen two things: at work, where they haven't yet implemented either, I get oodles of crud. There is something set up which tags potential spam, but no hooks for retraining mis-judged email are available. On the other hand, the spambayes plugin for Outlook at least pre-sorts the rest with minimal retraining needed. My personal setup has greylisting and blocklists, and I get maybe one every day or two, and some of those are aimed at lists which are already whitelisted.