spamassassin - perl e-mail filter to identify spam

Spamassassin is an intelligent email filter which uses a diverse range
of tests to identify unsolicited bulk email, more commonly known
as Spam. These tests are applied to email headers and content to
classify email using advanced statistical methods. It has a modular
architecture that allows other technologies to be quickly wielded
against spam and is designed for easy integration into virtually any
email system.

Before using, please read README.SLACKWARE file.

Optional dependencies:
- perl-Net-Patricia
- perl-Mail-SPF
- perl-Mail-DKIM
- perl-IO-Socket-INET6
- perl-Encode-Detect
- perl-Net-LibIDN2 or perl-Net-LibIDN
- perl-Email-Address-XS
- perl-digest-sha1
- perl-Mail-DMARC
- perl-Archive-Zip (required by the optional OLEVBMacro plugin)
- perl-IO-String   (required by the optional OLEVBMacro plugin)
- perl-Net-CIDR-Lite
- perl-Devel-Cycle (used in make test in tests)
- perl-Text-Diff   (used in make test in tests)
- libwww-perl with perl-LWP-Protocol-https (used as a fallback for the
  sa-update and also used by DecodeShortURLs plugin)
- pyzor

Optional dependencies for geolocation modules,
choose one from the list (in recommended order):
- perl-MaxMind-DB-Reader-XS (GeoIP2)
- perl-MaxMind-DB-Reader (GeoIP2)
- perl-IP-Geolocation-MMDB (GeoIP2)
- perl-IP-Country-DB_File
- perl-Geo-IP (old deprecated GeoIP)
- perl-IP-Country (deprecated)