[Exim] TNEF problems

Hi Guys,

since exiscan has problem with TNEF attachments like this:

Content-Type: application/ms-tnef;
        name="winmail.dat"
Content-Transfer-Encoding: base64

exim stops and mail remain in scan/input directories without being
delivered at all.
How can avoid (for istance with an ACL) to pass to exiscan TNEF
attachments (like winmail.dat)?

Thanks

Riccardo