As someone who moderates a few mailing lists, I was wondering why some mailing lists get swamped in spam at times. Is our spam filter failing us? So I decided to get some statistics on how our spam filter performs.
When I checked this against the spam scores assigned to the mail webmaster recieved I noticed that all of the spam messages were in the "Determined as spam, accepted" category - which is practically unnoticable on the graph. So it seems our spam filter is doing it's job pretty well.
While I had the log files open, I decided to see just how much email we sent out each day too:
Not bad - we deliver ~3 million emails each month to people subscribed to kde.org mailing lists and holders of kde.org addresses.