On Wed, 8 Sep 2010, RW wrote:
On Wed, 8 Sep 2010 09:51:43 -0700 (PDT)
John Hardin <jhar...@impsec.org> wrote:
On Wed, 8 Sep 2010, Tony Finch wrote:
sa-update for version 3.3 is usually very quiet - last update 4
July; previous one 12 June. We have been getting daily updates
since Saturday morning. Is this expected?
It's expected and very welcome. It means the age-limited nightly
masscheck corpora have once again gotten large enough that the score
generator can safely publish updated rules and scores on a regular
basis.
What's the reason for the age limit?
The nature of spam (and, to a lesser degree, ham, barring major changes
like the widespread adoption of HTML email) changes over time. A rule that
hit lots of spam and had a good S/O three years ago (e.g. the multilayer
obfuscated image pharma spams that were all the rage a few years back)
might hit nearly nothing today.
--
John Hardin KA7OHZ http://www.impsec.org/~jhardin/
jhar...@impsec.org FALaholic #11174 pgpk -a jhar...@impsec.org
key: 0xB8732E79 -- 2D8C 34F4 6411 F507 136C AF76 D822 E6E6 B873 2E79
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