GoFTP - 2007-01-05

How the heck do I get this thing to filter on "Content-Type: image/gif;" in the body.  When I view a sample spam with this "Content-Type" is in RED meaning that it is recognized as a spam word, but the real identifier that really could do some good is the "image/gif".  I never get real emails with embedded images in base64:  

------=_NextPart_000_0007_01C730D1.EC855E50
Content-Type: image/gif;
name="AVbjmHe1Fv.gif"
Content-Transfer-Encoding: base64
Content-ID: <g3LLPyDTUIpKwB7oGRMw>

I get a ton of these every day and I can't train them because the spammer includes a large letter of regular non-spam text usually taken from some webpage or news story.  I really need a "Body" magnet or someway to manually set the value of "Content-Type: image/gif;" to spam with a very high count.  As it is I am totally powerless with this tool it seems.  If anyone knows how to get this done please let me know.