Japanese encoded filename fails filename length test

[jclark]

We receive a large number of e-mails in a Japanese language encoding
using the charset:

charset=iso-2022-jp

When the filename is encoded using this charset, it basically takes up
to four characters in the e-mail to represent one character in the
filename: A single character can be translated to "%123" or "%12", etc.
So a 50 character filename jumps to 150 and fails the filename length
test.

Is there a configuration change I can make to recognize or represent
these filenames in their native charset? Or do I simply bite the bullet
and increase the filename length limit to some large value? If so,
anyone using some values they have seen be successful most of the time?

Thanks!
Jeff Clark
--
Jeffrey A. Clark
Associate Director, CITS
Director, Enterprise Systems
Skidmore College
815 North Broadway
Saratoga Springs, NY 12866-1632
(518) 580-5929
E-mail: jclark at skidmore.edu