When I attach a file to an outgoing email with outlook express, specifically word or excel documents, for example “filename.doc” the attachement is received by the recipiemt in the format “filename.xxxxxDEFANGED-doc” (where xxxxx is a 5 digit number). This means that the recipiemt cannot open the document without first saving it to the hard drive and renaming in back to “filename.doc”. What is causing this name change and how can I fix it?