>>>>> In <87sl8x1sq3.fsf@roddy.4407.kankyo-u.ac.jp>
>>>>>	NAKAJI Hiroyuki <nakaji@jp.freebsd.org> wrote:

> And here is the header of the part in concern.

> --------------050601010802060300010200
> Content-Type: application/msword;
>  name="=?ISO-2022-JP?B?NDQbJEI/NzUsM1g9LCVLITwlOkJQMX4lVyVtJTAlaSVgO1kxZzdQSHEbKEI=?==?ISO-2022-JP?B?WxskQjpOQnJAKRsoQl0bJEIhS"

[...]

Here is a program that tries fixing of corrupted B encoded words: