Just for the record: Of the 89,326 messages destined for my account and processed by DSPAM since I last reset the stats, it's been 99.6% accurate, with a 0.04% false positive rate. I haven't seen a false positive in several months. I see two or fewer spams in my inbox each month, and it takes me all of about a minute a day to clear my spam quarantine. DSPAM is a darn fine product.

My anti-spam system consists of some DNS-based blacklists (one local, the rest third-party) and SPF on the front line, with DSPAM behind it. This configuration meets my goals, in that it stops network transfer of most spam and quarantines the rest. Yesterday, the front-line stopped 396 connections, 18 of them stopped by the local blacklist, seven by SPF. 66 messages got through the front-line and were processed by DSPAM (with 100% accuracy for the day). Most of the spam that gets through the front line does so by virtue of coming via hosts I remotely administer for others, where I'm known variously as webmaster, postmaster, hostmaster, and root, and webmaster is usually visible on the web. Without those, I'd have received only three messages in my quarantine yesterday, which is not bad at all for an account I've had for seven years that's been exposed (unobfuscated) on the web and in Usenet since day one.

Again, I hope your project does for you what you want done, and wish you the best of luck with it.