spamassassin vers. 3.4.0-44.8.1
kmail vers 4.14.9-24.2

I installed spamassassin and configured it using the kmail anti-spam wizard.

I can select emails and mark them as spam using the "Spam" button. In doing so, Kmail indicates that it is filtering the messages selected and then moves them into the trash folder. However, new emails from the same source that was marked as spam still continue to come into the inbox. Have I configured something wrong?