Fax blank & no attachment

Hi,

I have installed Microsoft Shared Fax service on a Windows 2000 SBS. It
is configured as per microsoft kb id 325807
(http://support.microsoft.com/default.aspx?scid=kb;en-us;325807).
I have set it to route through email (priority 1) and also store faxes
in a specified folder (priority 2). When a fax is sent to this fax
number it goes into the folder fine and the specified recipient
receives an email entitled "Fax server XXX received a new fax from".
however, the email body is blank each time and there are no
attachments. I have sent faxes to this number myself with a message and
attachments but still nothing comes through in the email. I have also
changed the email recipient to make sure that outlook isn't stripping
attachments. I have tested with our office email, GMail & Hotmail and
the problem is the same with all 3.
The full email body and attachments are stored successfully in the
folder specified.

Any suggestions?

Thanks,

Brian