Get rid of BANNED and VIRUS alert notifications

[datahellas]

I use ISPConfig3 with postfix, amavis and clamd. I have set in amavisd.conf messages marked as VIRUS, SPAM and BANNED to be deleted (discard) but I still get email alert notifications. How I can stop getting notifications for such messages?

in amavisd.conf:

$final_virus_destiny = D_DISCARD;
$final_spam_destiny = D_DISCARD;
$final_banned_destiny = D_DISCARD;
$final_bad_header_destiny = D_PASS;

The mail notifications I get have subject like the following:

BANNED contents (.exe,.exe-ms,report.document.doc.exe) in mail FROM [117.xxx.xxx.xxx] <xxx@xxx.com>