Lately we've started using free antispam from bitdefender. Here is out quick guide for best practice use:

Automaticky delete (move to quarantine) or pass (ignore) spam e-mails

/opt/BitDefender/bin/bdsafe group configure  Default antispam actions quarantine
/opt/BitDefender/bin/bdsafe group configure  Default antispam actions ignore

How many e-mails are in a quarantine

/opt/BitDefender/bin/bdsafe quarantine status

Show marked spams

 /opt/BitDefender/bin/bdsafe quarantine list spam

Example output
UUID: 1
From: webmaster@barriogoticocafe.cz
To: info@barriogoticocafe.cz
Subject: REZERVACE
Date: Sun, 01 May 2016 08:43:43 +0200 (CEST)

[...]

UUID: 19
From: tpilat@langmaster.cz
To: topilat@seznam.cz
Subject: 
Date: Sun, 01 May 2016 10:01:14 +0200 (CEST)

Two e-mail doesn't look like spam, so we check them manualy.

/opt/BitDefender/bin/bdsafe quarantine copy spam sender webmaster@barriogoticocafe.cz /tmp/
Restore: '/opt/BitDefender/var/quarantine/spam/spam_1' => '/tmp//spam_1.eml' ... OK

After a visual check it is not definitely a spam. So we need to resend it. First set antispam action to ignore

/opt/BitDefender/bin/bdsafe group configure  Default antispam actions ignore    
/opt/BitDefender/bin/bdsafe quarantine resend spam sender webmaster@barriogoticocafe.cz localhost:10025
Resend: '/opt/BitDefender/var/quarantine/spam/spam_17' via 'localhost:10025' ... OK

The port 10025 skips some checks included amavis, but doesn't skip milter (bitdefender). That's why we set antispam action to ignore.

Deleting whole queue

/opt/BitDefender/bin/bdsafe quarantine list spam|grep UUID|cut -f 2 -d\ | xargs -n1 /opt/BitDefender/bin/bdsafe quarantine delete spam uuid

It listens at 127.0.0.1 (default), we change it to secure-LAN ip

 /opt/BitDefender/bin/bdsafe registry setkey /BDUX/Radmin/Host 10.0.4.12:8139
 /opt/BitDefender/bin/bdradmin restart

Now you can type in your browser https://10.0.4.12:8139/