Technical Tip: How to block email from a specific sender using FortiMail

1. Navigate to Profile -> Group -> Email Group, create a new email group, and add the sender's email addresses to block.

2. Navigate to Policy -> Access Control -> Receiving, create a new Access Control Rule, add the email group created in Step 1, and set the action to 'Reject'.

The newly created Access-Control Policy must be placed in the policy table above the currently used policy. Otherwise, the new policy will not be triggered.