[Mimedefang] Blocking based on charset?

[Ashley M. Kirchner]

    I'm getting a lot of spam messages that have 'Content-Type: 
text/plain; charset=windows-1251' specified in them, and the message is 
written in Russian.  Is there some way of blocking these?  They're all 
coming from different US based addresses, so I can't just block say .ru 
for it.

-- 
 H| I haven't lost my mind; it's backed up on tape somewhere.
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  Ashley M. Kirchner <mailto:ashley at pcraft.com>   .   303.442.6410 x130
  IT Director / SysAdmin / WebSmith             .     800.441.3873 x130
  Photo Craft Laboratories, Inc.            .     3550 Arapahoe Ave. #6
  http://www.pcraft.com ..... .  .    .       Boulder, CO 80303, U.S.A.