[Mailman-Users] Unknown encoding error

Can anyone explain this one to me?

Mar 04 07:35:02 2005 (4008) Uncaught runner exception: unknown encoding:
gb2312
Mar 04 07:35:02 2005 (4008) Traceback (most recent call last):
File "/home/mailman-2.1/Mailman/Queue/Runner.py", line 111, in
_oneloop
self._onefile(msg, msgdata)
File "/home/mailman-2.1/Mailman/Queue/Runner.py", line 167, in
_onefile
keepqueued = self._dispose(mlist, msg, msgdata)
File "/home/mailman-2.1/Mailman/Queue/IncomingRunner.py", line 130, in
_dispose
more = self._dopipeline(mlist, msg, msgdata, pipeline)
File "/home/mailman-2.1/Mailman/Queue/IncomingRunner.py", line 153, in
_dopipeline
sys.modules[modname].process(mlist, msg, msgdata)
File "/home/mailman-2.1/Mailman/Handlers/CookHeaders.py", line 74, in
process
prefix_subject(mlist, msg, msgdata)
File "/home/mailman-2.1/Mailman/Handlers/CookHeaders.py", line 262, in
prefix_subject
h.append(s, c)
File "/home/mailman-2.1/pythonlib/email/Header.py", line 285, in
append
s = s.encode(outcodec, errors)
LookupError: unknown encoding: gb2312

Mar 04 07:35:02 2005 (4008) SHUNTING:
1109943290.6219399+5bd427b49515b41d7f44df52f67a2e0837d60514

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