message with blacklisted sender not dropped

[Tomas Macek]

I'm using Amavisd-new 2.6.4 on Scientific Linux 6.
The user has the sender address properly on it's own blacklist in PgSQL 
database. The mail is properly tagged as BLACKLISTED

     X-Spam-Status: Yes, score=x tagged_above=4 required=6 BLACKLISTED 
tests=[]      autolearn=unavailable

so we can say, the blacklisting works. But the message is still delivered 
to the user's mailbox.
The documentation says "SA is not called when the sender is white- or 
blacklisted, or when the message body is too large", but how sho
uld I configure Amavis to automatically drop the message then the sender 
is on blacklist?

These are mine values from amavisd.conf that seem to me to be relevant for 
this purpose:

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

$virus_quarantine_method        = undef;
$spam_quarantine_method         = undef;
$banned_files_quarantine_method = undef;
$bad_header_quarantine_method   = undef;
$clean_quarantine_method        = undef;
$archive_quarantine_method      = undef;

Regards, Tomas