The latest version (2.61) of razor-agents is now available for download from http://razor.sourceforge.net/
The highlight of the release is introduction of a new signature scheme, Whiplash, based on canonical domain names present in the message body of spam messages.
I'm very impressed so far. The upgrade from 2.40 went without a hitch and I saw a change in results almost immediately.
My historic razor 2.40 hit ratio was 19.89% (measured from mid-june till this morning).
Since upgrading to 2.61 this morning, razor has caught 27 out of 30 spams (90%). While it's a small sample, the difference in percentage is quite impressive.
I've had no FP's so far, although I did get one message posted to a spam-discussion list which had a test-virus attached that razor matched. I suspect it was the attachment, not the message, that caused a match, so I'm not really concerned about it. I've had several similar things happen before on that list, and my filtering is set up to handle frequent flaggings of messages containing spam or spam attachments on it.
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