====== Ubuntu - SpamAssassin - Train SpamAssassin with Ham and Spam ======

Train with Spam.

<code bash>
sa-learn --showdots --mbox --spam spamfolder
</code>

----

Train with Ham.

<code bash>
sa-learn --showdots --mbox --ham hamfolder
</code>


<WRAP info>
**NOTE:**  SpamAssassin needs at least 200 Ham and Spam message before it becomes fully trained.  Everything above just makes it "safer" as in "more valid" or "accurate".  With auto-learning these numbers will increase over time and also decrease as statistics of old mails will be dropped over time.
</WRAP>

----

===== Automate learning =====

This learning can be automated by:

  * Create a dedicated email account for Spam and another dedicated account for Ham.
  * When a user receives any Spam they should forward this onto the inbox of the Spam email account.
  * Users can also copy non-spam email to the inbox of the Ham email account.
  * Run a cron job to train against the Spam in the Spam email account.

The script for the Spam can be something like:

<code bash>
/usr/bin/sa-learn -u <username> --spam /home/domain/<user>/Maildir/.<folder name>/cur/  
/usr/bin/find /home/domain/homes/<user>/Maildir/.<folder name>/cur/ -mtime+28 -exec rm {} \;
</code>

<WRAP warning>
**WARNING:**  Do not have the <user> and <folder name> point to account of an actual user.  

This should instead point to the the email account that holds the spam. 
</WRAP>

Have ham learning be done as:

<code bash>
/usr/bin/sa-learn -u <username> --ham /home/domain/<user>/Maildir/.<folder name>/cur/  
</code>

<WRAP warning>
**WARNING:**  Do not have the <user> and <folder name> point to account of an actual user.  

This should instead point to the the email account that holds the Ham. 
</WRAP>