SpamAssassin Notes

What I have done is set up some a cron job to automaticly train the user-specific bayesian detection.

I currently have my mail set up so that I manually move false negatives (undetected spam) to ~/TrainingSpam, and false positives (desirable mail, identified as spam) to ~TrainingHam.

1. Create a cron entry like:

   22 2 * * * ~/bin/TrainSpam
   44 2 * * 0 cd ~;cp INBOX.Trash tmp;head -13 tmp/INBOX.Trash>INBOX.Trash
   

   The first entry runs my training script, the second (optional) entry rotates my trash file to tmp every week. So trash is held for 1-2 weeks, then lost. I need the head -13 to keep the mailbox preamble in tact for my mail program.
2. Create the script ~bin/TrainSpam containing:

   #!/bin/sh
   
   # script to update SpamAssassin baysian spam training
   
   cd ~
   LOGFILE=tmp/SpamTraining.log
   SPAM=TrainingSpam
   HAM=TrainingHam
   
   date >> $LOGFILE
   
   echo Spam: >> $LOGFILE
   /usr/bin/sa-learn --spam --mbox $SPAM >> $LOGFILE 2>&1
   cp $SPAM tmp
   head -13 tmp/$SPAM > $SPAM
   
   echo Ham: >> $LOGFILE
   /usr/bin/sa-learn --ham  --mbox $HAM  >> $LOGFILE 2>&1
   cp $HAM tmp
   head -13 tmp/$HAM > $HAM
   
   date >> $LOGFILE
   

Aaron Birenboim