Use the following procedures to add email addresses to the Always Block list:
Steps
From the page Main > Policy Management > Always Block/Permit, click the Always Block tab.
In the section Email Address Block List, add a predefined email address list; click Browse and navigate to the desired text file.
The file format should be one email address per line, and its maximum size is 10 MB.
You can also enter an individual email address in the field Email address. Click the right arrow button to add the individual entry to the Email
Address List on the right.