Action 'Strip all attachments' in Content Filtering Policies not stripping all attachments in version 10.7.3

Products

• Messaging Gateway

Issue/Introduction

Symantec Messaging Gateway version 10.7.3 does not remove some attachments when "Strip all attachments" action is triggered.

Cause

Certain file types are skipped, as they are, more often than not, part of the email itself, rather than an attachment.  
These file types are:
SMTP
MIME
TEXT
HTML
XHTML

Resolution

Symantec is working to address this issue in a future release