If a message is not filtered as you expect, it can be tested under Scan Diagnostics.
Select the scan engine to process the message: from the drop down menu.
Provide the message to be scanned: by browsing to and uploading the file.
Paste MIME message: paste the MIME.822 in the text box.
Add applicable message envelope information:
Sender email address
Recipient email address(es)
Source IP address
Message direction
Inboard
Outboard
Internal
Interface type
Interface SMTP interface
Connection SSL secure
Connection used STARTTLS
Client authenticated
Verbose response
Show request
Press Scan Message to begin the process. The results will appear under Scan Results.