Mail::SpamAssassin::Plugin::Razor2(3) User Contributed Perl Documentation Mail::SpamAssassin::Plugin::Razor2(3)

Mail::SpamAssassin::Plugin::Razor2 - perform Razor check of messages

loadplugin     Mail::SpamAssassin::Plugin::Razor2

Vipul's Razor is a distributed, collaborative, spam detection and filtering network based on user submissions of spam. Detection is done with signatures that efficiently spot mutating spam content and user input is validated through reputation assignments.

See for more information about Razor.

Razor2 requires the "Razor2::Client::Agent" Perl module to be installed.

Razor2 calculates a signature for each part of a multipart message and then compares those signatures to a database of known spam signatures. The server returns a confidence value (0-100) for each part of the message. The part with the highest confidence value is used as the confidence value for the message.

The following eval rules are provided by this plugin:

full   RULENAME   eval:check_razor2()
   Returns true if the confidence value of the message is greater than or equal to `min_cf` as defined in
   the Razor2 configuration file 'razor-agent.conf(1)'.
full   RULENAME   eval:check_razor2_range(<engine>,<min>,<max>)
   <engine>  Engine number (4, 8 or '')
   <min>     Minimum confidence value (0-100)
   <max>     Maximum confidence value (0-100)
   Returns true if the spam confidence value for the message is greater than or equal to <min> and
   less than or equal to <max>. If <engine> is not specified, the engine with the highest
   confidence value is used.

Whether to use Razor2, if it is available.

Instead of running Razor2 synchronously, fork separate process for it and read the results in later (similar to async DNS lookups). Increases throughput. Considered experimental on Windows, where default is 0.
How many seconds you wait for Razor to complete before you go on without the results
Define the filename used to store Razor's configuration settings. Currently this is left to Razor to decide.
2024-06-30 perl v5.38.2