[Exim] 8-bit in From: and Subject:

Is there any way of detecting/rejecting msgs with 8-bit chars
(topbit) in their headers (in particular From: and Subject:) ?
Anything I can put in an ACL or preferably a filter?

Cheers,
Terry.

Terry Horsnell (tsh@???)
I.T. Manager
Medical Research Council
Lab of Molecular Biology
Hills Road
CAMBRIDGE CB2 2QH
U.K.
Phone:    +44 (0)1223 248011
Fax:    +44 (0)1223 213556