Apologies for the delay in getting a reply. I would suggest you do one of the following:
1. Register the template using Web Upload
2. Create a custom concept using all of the headings you deem most relevant to match the template
3. Add data to the document properties and use this on a document properties definition to use in a policy rule (see screenshot)
Hope this helps.
FAQs for Network DLP - http://kc.mcafee.com/corporate/index?page=content&id=KB77088
FAQs for Email Gateway 7.x - http://kc.mcafee.com/corporate/index?page=content&id=KB76144