You have uncommented the bypass instructions in amavis conf file, so it will bypass the scan. Keep them commented and amavis will scan.
To test that amavis works well : https://gist.github.com/ychaouche/9b32bda037afb9eaaa2f4809dcfb2ec0 (can't paste the content here otherwise this e-mail will be discarded by antispam software). -- Yassine.
