Enabling the quarantine is optional, but you must enable it for it to start rejecting messages 

and for you to view those messages:

1.    Enter SPAM Expert dashboard via client area. If user is not familiar with 

       this then may refer to the below guideline:

       (How To Enter SPAM Expert Dashboard) Please click here. 

2.    Click on  "Filter Settings" under "Incoming - Protection Settings" category to proceed.

3.    Make sure that Quarantine enabled box is ticked. Click "Save" and Quaratine Email 

       is enabled successfully.