opening pdf files

["Blackwell, Steve @ GSI" <steve j blackwell l-3com com>]

There was some talk a couple of weeks ago about epiphany not openning pdf
files sometimes. I have a similar situation but I think it is a little
different.

I get my e-mail through a Microsoft exchange server web page. (Work - I have
no choice) When I open a message that has a PDF as an attachment, I see the
attachment as a link called, say, "whatever.pdf". When I click on the link I
get this message in a dialog box:

   Download this file?

   File type "unknown".

   You have no application able to open "whatever.pdf".
   You can download it instead.

The interesting thing is why epiphany thinks that the file type is
"unknown". Could it be that the file is badly formed and epiphany looks
inside it rather that at the file extension and not recognizing it as a
valid PDF file, refuses to open it? If so, is there a way to get around this
given that I trust the source? If I go ahead and download the file, I am
able to open it.

Steve.