You create a content policy (compliance policy) which strips all attachments including an e-mail message (*.eml).
Symantec Messaging Gateway (hereafter "SMG") triggers the content policy violation on a message which has *.eml as an attachment as expected, but delivers it with *.eml un-stripped.
N/A
Symantec is aware of the issue and is going to address it in the next release.
Workaround: