exchange 2010, detect keywords in internal emails and forward/cc manager to email if contains keywords

Hi all,

wondering if its possible for exchange to do, or some 3rd party software, that will look through subjects or message contents for keywords for emails that are sent internally

reason being, managers want to flag up any inapropriate emails staff maybe sending to one another, somethign that will either inform a manager that an email was sent containing words or cc's the manager into it somehow?

anyone know of what im looking for?

thanks