Install BitDefender

BitDefender for Unices (Unixes) is a commercial (non-free) antivirus product with 30 days free trial.

Many well known antivirus products can be added thanks to Amavisd-new module, but the command-line installation for BitDefender is very easy (takes 3-5 minutes).

Note: During the following steps, you will be required to read (accept or decline) the license terms.

Installation steps

Edit /etc/apt/sources.list and add the line below:
deb http://download.bitdefender.com/repos/deb/ bitdefender non-free

Run:
wget http://download.bitdefender.com/repos/deb/bd.key.asc
sudo apt-key add bd.key.asc
sudo apt-get update
sudo apt-get install bitdefender-scanner
sudo bdscan

Read the license terms, accept or decline.

sudo /etc/init.d/amavis restart
Scrollout will show Found primary av scanner BitDefender at /usr/bin/bdscan in Monitor > Logs.

Update the antivirus:
sudo bdscan --update

Activate a new license key

If you decide to purchase a license key, you need to change the "key =" value in file /opt/BitDefender-scanner/etc/bdscan.conf

Uninstall

If you decide to uninstall:
sudo apt-get autoremove --purge bitdefender-scanner -y
rm -fr /opt/BitDefender*