GFI FaxMaker ships with its own internal PDF converter to render and convert PDF attachments. The following steps will cover how to enable this.
1. Within FaxMaker, go to Configuration > Advanced > Document Conversion.
2. Open the Properties
3. If PDF is listed under the file extension list for allowed conversion, click on it to select and then use the Remove button.
4. Accept the changes by clicking OK.
5. Restart FaxMaker FaxServer service.