said by scooby :

SpamAssassin takes a lot of work to keep up. Its better to block the spam at the source. DSPAM is the way to go if you go opensource. Its pretty badass. My email stats since the beginning of the year.

TP True Positives: 21603
TN True Negatives: 49289
FP False Positives: 109
FN False Negatives: 337
SC Spam Corpusfed: 27
NC Nonspam Corpusfed: 70
TL Training Left: 0
SHR Spam Hit Rate 98.46%
HSR Ham Strike Rate: 0.22%
OCA Overall Accuracy: 99.37%

said by ericreid :

[Holy cow. It's only the 94th day of the year. Over 7000 emails per day? With 2000 valid? That's insane!