Both antispam and antivirus scans are bypassed.

If email is not physically bypassing the FortiMail unit, but is not undergoing both antispam and antivirus scans, verify that access control rules are not too permissive. Also verify that a policy exists to match those connections, and that you have selected antispam and antivirus profiles in the policy. Scans will not be performed if no policy exists to match the connection.