Quarantined Mails

==== Required information ====
- iRedMail version: 0.8.6
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): PGSQL
- Linux/BSD distribution name and version: Debian 7
- Related log if you're reporting an issue:
====

Not sure if this is a silly question or not but I literally NEVER have anything in Quarantined Mails. I know mails are being blocked but when I look in my iredadmin (pro 1.4.1) there is never anything being displayed.

Can I somehow test if my amavis is actually catching viruses / spam?

Thanks