How to train the spam classifier
Training the spam classifier on mails that have been incorrectly classified helps the accuracy of the classifier on mails received in the future.

Legitimate mail that has been incorrectly tagged as Spam are called False Positives, and Spam messages that have not been tagged when they should have are called False Negatives.

If you receive any false positives/negatives, you should follow the procedure below.

Step 1

Right-click the message and select 'Move to Folder...'.

Step 2

Click the '+' symbol next to 'Public Folders' and click the '+' symbol next to 'All Public Folders'.

Step 3

Find the folder called 'SpamAssassin' and click the '+' symbol next to it.

If your mail is a false-positive, click the 'Not Spam' folder and click 'OK'.
If your mail is a false-negative, click the 'Spam' folder and click 'OK'.

Done.