How I setting to allow eight bit charector?

Hi,

I use iMS 5.1 on Solaris 8 system.

I want to allow eight bit charector in message header,

but, iMS MTA changes the 8 bit charector like below.

"Subject: =?UNKNOWN?B?wMywzcC6IDi68cau?="

MTA encode the 8bit charector using BASE64 and

setting the encoding type to "UNKNOWN"

I setting the "eightbit" channel keyword to default and

tcp_local, but It is not work.

How I setting the keyword allow 8bit?

Regards,

Heungdeok Yoon.

[505 byte] By [708739] at [2007-11-25 7:09:22]