Some of the messages which we scan can receive a score which is above the minimum score for spam, and below score for auto discard which you or you administrator has set.
These two walk throughs should be able to guide you through configuring a filter to sort your messages into a separate folder.
Creating an Automatic Rule to separate potential Spam Messages.
Microsoft Outlook
Mozilla Thunderbird
If your Mail reader is not listed, please let us know, and we will post an example for your mail reader as well.
Using an automatic filter will not eliminate Spam, but it will move the messages to a separate folder for you to examine when ever you want. This will also insure that you get Email in your Inbox, not Spam. You can always refer to the Spam Folder at a later time to examine the contents.

