Kdog,
Here's what you need to do. You need to be able to see the header information of this transmission to be able to know what you need to add to your proxy. If at all possible try to use something similar to Outlook, or Outlook Express (though I can only recommend Outlook) and use the View Message Option button. You might be able to do this from another account if the Efax can be directed so. Once you can view the Message Options, you will be able to see what type of MIME efax is to load on the firebox. For example, if you have a Jpeg image come through, the message type would be image/jpeg.
By default the check box on "Allow only safe content types and block file patterns" button should be checked. I haven't used Efax, and the only information that I've seen points to the file type "image/efax".
You should be able to add a new type as:
MIME TYPE: image/efax
Description: Efax
Click Ok.
Select your new content type and click ok, and save to the firebox.
However if the MIME type is differnet than above you will need to enter exactly what it is described as.
Hope this helps.
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