MS Word Docs hosts security relevant metadata

Hi list, according to an article in the german computer-zine c't ms-word documents hosts security relevant metadata, as paths, hostnames, ip's and so on. If you send doc-data via email you'll provide a potential attacker with such information, that can be helpfull to compromise your network. So it seems to be a good idea to filter all outgoing mail with such attachments and convert automagically into pdf. ANY SUGGESTIONS ?!?