[luau] News - SpamAssassin 2.50 released!

[Warren Togami]

SpamAssassin just became a lot better with Bayesian-style analysis.

Cool.


Justin Mason wrote:
> OK folks -- SpamAssassin 2.50 is now up on /released/ .  Please
> download and install!
> 
> http://SpamAssassin.org/downloads.html
> 
> This should be considered a beta release.
> 
> Main changes since 2.4x:
> 
> - Bayesian filtering, using a Bayesian-style form of
> probability-analysis classification.  This uses an algorithm based on
> the one detailed in Paul Graham's 'A Plan For Spam' paper, along with
> aspects taken from Graham Robinson's work, and the chi-combining
> technique developed by the SpamBayes project.
> 
> - Auto-learning.  This trains the Bayesian filter automatically,
> based on the results from traditional SpamAssassin diagnosis.   It
> uses a set of heuristics and separate thresholds to ensure (as much
> as is possible) that it trains on guaranteed non-spam and spam.
> Old, unused tokens are automatically expired.
> 
> - much-improved rule set.  A whole new set of rules based on
> Message-Id analysis is now in place, which accurately detects forged
> headers from a wide range of spamware.   Many inaccurate rules have
> been dropped. HTML tests much improved, with a set to detect
> image-only spam.
> 
> - new default format for detected-spam messages; the message is 
> encapsulated as a MIME part, with a preview and the spam report in
> the main part of the message.
> 
> - Score sets.  Based on whether you are using just SpamAssassin
> rules, adding network tests, and using a trained Bayesian database, 
> SpamAssassin will use a set of scores appropriately to gain the 
> maximum degree of accuracy.
> 
> - Italian, Polish, Spanish, French and German rule sets and
> translations.
> 
> - Much improved reliability with spamd.  The problems with signals 
> have been cleared up thanks to a pipe-based child tracking system, 
> and all spamd-hanging bugs reported have proved unreproducable.
> 
> - Unicode problems with Red Hat 8 and perl 5.8 fixed.   Works on Perl
>  5.005, 5.6.x, and 5.8.x.
> 
> - Taint-safe.  SpamAssassin runs with perl's taint-checking enabled
> for better security.
> 
> - Razor 1 support is now officially deprecated.
> 
> - "spamc -c" was not working, fixed.  This fix required increasing
> the revision of the spamd protocol; only difference is that now more
> than one protocol header can appear in the reply from spamd.
> 
> - all fixes from 2.44 included.
> 
> --j.
>