>I think Earthlink uses Brightmail. If that is so then Brightmail >statistics are VERY bad. I doubt I had any false alarms - lost email. >But it only got about 75% or less of the spam. I used it while on the >road the last two weeks. I might comment that I was very unimpressed.
Did you enable your filtering? I think that you have to enable it first from the Spamminator address. It's been ages since I had an Earthlink account, not sure if things are the same now.
If it caught 75%, then apparently it's enabled.
My results on Brightmail with my home ISP since my last post in this thread are 3 FNs and 41 spams recognized. That's about 93.18% of the total spam caught, and a 6.82% FN rate.
But again, I've had absolutely zero FPs on it and have been using it for many months. 93% hit rate isn't great, but 0 FPs is always a good thing. Overall it's very comparable to SA 3.0.1's set3 performance with a threshold of 8.0, the lowest threshold that actually got 0 FPs in the last mass-check:
SUMMARY for threshold 8.0: # Correctly non-spam: 29452 100.00% # Correctly spam: 26031 93.27% # False positives: 0 0.00% # False negatives: 1877 6.73% # TCR(l=50): 14.868407 SpamRecall: 93.274% SpamPrec: 100.000%
I guess my ISP has chosen a quite conservative setting for BM, which I guess I'd prefer to them choosing an overly-aggressive setting.
