[exim] Why exim-sa-exim and spamassassin not delete yhe mess…

hello,

I have debian server. exim, sa-exim and spamassassin is install. I receive
one message and i see the proprieté :
X-Spam-Status: Yes, score=7.3 required=5.0 tests=HTML_20_30,HTML_MESSAGE,
MIME_BOUND_NEXTPART,NA_DOLLARS,NIGERIAN_BODY1,PRIORITY_NO_NAME,
SUBJ_ALL_CAPS autolearn=no version=3.0.3

The message is not delete , why? the score 7.3 is > as required 5.0. Help me
to delete the message where the score is better than the required.


Best Regard.

-- 
Josepha HODE
Informaticien Réseau Télécom
Tél: (227) 95 65 05
Email: jojodeparis@???
          jojodeparis@???