Download SpamAssassin 4.0.0

SpamAssassin is a spam filter that allows a mail server to recognize spam messages. To this end, a number of well-known recognition methods are combined. For example, the program looks at the content of the message and uses a self-learning filter to determine whether the message is spam or not; In addition, help is also sought from a number of blacklists and distributed hash databases on the internet. The developers have released version 4.0.0 and the most important changes are listed below:

Notable changes

• This release includes fixes for the following:
  • Support for international text such as UTF-8 rules has been completed and significantly improved to include native UTF-8 processing
  • Bayes plugin has been improved to skip common words aka noise words written in languages ​​other than English
  • OLEVBMacro plugin has been improved in order to detect more Microsoft Office macros and dangerous content. It has also been improved to extract URIs from Office documents for automatic inclusion in rules such as RBL lookups.
  • You can now use Captured Tags to use tags “captured†in one rule inside other rules
  • sa-update(1) tool has been improved with three new options:
  • forcemirror: forces sa-update to use a specific mirror server,
  • score-multiplier: adjust all scores from update channel by a given multiplier to quickly level set scores to match your preferred threshold
  • score-limit adjusts all scores from update channel over a specified limit to a new limit

• SSL client certificate support has been improved and made easier to implement with spamc/spamd
• DKIM plugin can now detect ARC signatures
• More work on improving the configuration and internal coding to use more inclusive and less divisive language
• spamc(1) speed has been improved when both SSL and compression are used
• The normalize_charset option is now enabled by default. NOTE: Rules should not expect specific non-UTF-8 or UTF-8 encoding in the body. Matching is done against the raw body, which may vary depending on normalize_charset setting and whether UTF-8 decoding was successful.
• Mail::SPF is now the only supported module used by the SPF plugin.
• Mail::SPF::Query use is deprecated, along with settings do_not_use_mail_spf, do_not_use_mail_spf_query.
• SPF lookups are not done asynchronously and you may consider using an SPF filter at the MTA level (pypolicyd-spf / spf-engine / etc) which generates a Received-SPF header that can be parsed by SpamAssassin.
• The default sa-update ruleset doesn’t make ASN lookups or header additions anymore. Configure desired methods (asn_use_geodb / asn_use_dns) and add_header clauses manually, as described in documentation for the Mail::SpamAssassin::Plugin::ASN.