Python Error with Postfix queue filling up

[JP Horst]

> I noticed that some emails were not comming through on my Kolab 3
> server. The mail logs filled up with entries such as this:
> 
> postfix/smtp[12133]: AA3861280D28: to=<user at localdomain.com>,
> relay=127.0.0.1[127.0.0.1]:10026, delay=377952, delays=377952/0/0/0,
> dsn=4.4.2, status=deferred (lost connection with 127.0.0.1[127.0.0.1]
> while sending end of data -- message may be sent more than once)
> 
> It seems that most emails are coming through, but there are about 11 of
> them in the queue that aren't moving. After some troubleshooting, I
> restarted the Wallace service and then started getting this error for
> every stuck message on the console when I try to flush the queue:
> 

I confirm this error. As most mails go through, also with us some get stuck and 
keep showing up with postqueue -p:

F012720724    27469 Fri Mar  1 15:43:53  news at email.managementcircle.de
(delivery temporarily suspended: lost connection with 127.0.0.1[127.0.0.1] 
while sending end of data -- message may be sent more than once)
                                         archiv at sciencebridge.de
                                         archiv at sciencebridge.de
                                         info at sciencebridge.de




> # error: uncaptured python exception, closing channel
> <smtpd.SMTPChannel connected 127.0.0.1:44624 at 0xa320b0c> (<type
> 'exceptions.UnicodeDecodeError'>:'utf8' codec can't decode byte 0xbb in
> position 10277: invalid start byte
> [/usr/lib/python2.6/asyncore.py|read|78]
> [/usr/lib/python2.6/asyncore.py|handle_read_event|428]
> [/usr/lib/python2.6/asynchat.py|handle_read|158]
> [/usr/lib/python2.6/smtpd.py|found_terminator|184]
> [/usr/lib/python2.6/site-packages/wallace/__init__.py|process_message|249]
> [/usr/lib/python2.6/json/__init__.py|dumps|230]
> [/usr/lib/python2.6/json/encoder.py|encode|367]
> [/usr/lib/python2.6/json/encoder.py|_iterencode|309]
> [/usr/lib/python2.6/json/encoder.py|_iterencode_dict|275]
> [/usr/lib/python2.6/json/encoder.py|_iterencode|294])
> 
> Can anyone enlighten me on what going on? This python error is beyond
> me.
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