You can change your default Spam Settings by logging into the SmarterMail (webmail) client. Click on "Settings" in the menu bar and then select the "Filtering" folder in the left navigation window. Next, select the "Spam Filtering" option.
On the "Options" tab you have the choice of using the default sam settings which are reflected on the "Actions" tab or you can select the "Override spam settings for this account" option. Then select the "Actions" tab and you can determine what to do with spam at the low, medium or high probability. Make sure to Save your changes.