If you want Amavisd to insert
X-Spam-* headers in each email, please decrease Amavisd setting
$sa_tag_level_deflt (in Amavisd config file )to a very low score, e.g.
-999, then restart Amavisd service:
$sa_tag_level_deflt = -999;
That means Amavisd will insert
X-Spam-Flag and other
X-Spam-* headers when email score >=
Do not forget to restart services Amavisd.