The great spam-off, part 1

So, I finally decided that the volume of spam on my servers had grown past my ability to tolerate. I decided to hold a spam-off by testing several well-known products and reporting the results here. My critieria are simple if unscientific: whichever product gives the best price/performance/usability ratio wins.
I started with GFI MailEssentials, which has been widely praised in a variety of places. It downloaded and installed easily (great installer), but after three days, it hasn’t caught any spam, at least according to its own logs! It doesn’t offer a way to quarantine spam into a public folder, and there’s no way to mark a message as suspected spam. Other than that, it’s great 🙂 I’ll post an update after I check with their technical support; I can see that the event sink is working because some messages from hosts on the ORBS RBL have been NDR’d (at least according to the logs).