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--- spamassassin:train_spamassassin_with_ham_and_spam [2019/12/04 21:16] – removed peter
+++ spamassassin:train_spamassassin_with_ham_and_spam [2020/07/23 03:17] (current) – old revision restored (2017/03/31 16:11) 92.220.10.100
@@ Line 1: / Line 1: @@
+====== 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>