cd $HOME
mkdir src
cd src
wget http://www.apache.org/dist/spamassassin/Mail-SpamAssassin-3.4.0.tar.gz
tar xvzf Mail-SpamAssassin-3.4.0.tar.gz
cd Mail-SpamAssassin-3.4.0
perl Makefile.PL PREFIX=$HOME && make && make install


spamassassin < $HOME/src/Mail-SpamAssassin-3.4.0/sample-spam.txt


use_auto_whitelist 1

loadplugin !HitFreqsRuleTiming !HitFreqsRuleTiming.pm

body DEMONSTRATIONS_RULE ** ** ** ** ** /sue/
score DEMONSTRATIONS_RULE ** ** ** ** ** 0.1
describe DEMONSTRATIONS_RULE ** ** ** ** ** This is a simple example rule


body DEMONSTRATIONS_RULE/\bsue\b/

body DEMONSTRATIONS_RULE/\bsue\b/i

header DEMONSTRATIONS_RULE /\bsue\b/i

spamassassin --lint

spamassassin --lint -D

sa-update && service spamassassin restart