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.

For a complete user experience (basic and advanced functions) spamassassin
requires: perl-Test-Pod, perl-Encode-Detect, perl-Image-Info, perl-TimeDate,
perl-Net-LibIDN, Net-SSLeay, perl-Socket6, perl-IO-Socket-SSL,
perl-IO-Socket-INET6, perl-Crypt-OpenSSL-Bignum, perl-Crypt-OpenSSL-Random,
perl-Crypt-OpenSSL-RSA, perl-Geography-Countries, perl-IP-Country,
perl-digest-sha1, perl-digest-hmac, perl-html-tagset, perl-html-parser, re2c,
libwww-perl, perl-NetAddr-IP, perl-Net-Server, perl-Net-Ident, perl-MailTools,
perl-net-ip, perl-net-dns, perl-Net-DNS-Resolver-Programmable, perl-Mail-SPF
perl-Mail-DKIM.

You may want to install pyzor, too.

All required packages are available from SlackBuilds.org.

Before using, please read README.SLACKWARE file.