Sync problem

[Gilles Roy <groy@xxxxxxx>]

When syncing a specific maildir to the IMAP server (Microsoft Exchange  
IMAP4rev1 server version 5.5.2658.4) with offlineimap 4.0.16, I get 
something like:

# offlineimap -1

...

Syncing multimedia: IMAP -> Maildir
Copy message -2 Maildir[multimedia] -> IMAP[multimedia], LocalStatus[multimedia]
Copy message -24 Maildir[multimedia] -> IMAP[multimedia], 
LocalStatus[multimedia]
Copy message -23 Maildir[multimedia] -> IMAP[multimedia], 
LocalStatus[multimedia]
Copy message -22 Maildir[multimedia] -> IMAP[multimedia], 
LocalStatus[multimedia]
Thread 'New msg sync from multimedia' terminated with exception:
Traceback (most recent call last):
   File "/usr/share/python-support/offlineimap/offlineimap/threadutil.py", line 
153, in run
     Thread.run(self)
   File "/usr/lib/python2.4/threading.py", line 422, in run
     self.__target(*self.__args, **self.__kwargs)
   File "/usr/share/python-support/offlineimap/offlineimap/folder/Base.py", 
line 212, in syncmessagesto_neguid_msg
     successuid = tryappend.savemessage(uid, message, flags, rtime)
   File "/usr/share/python-support/offlineimap/offlineimap/folder/IMAP.py", 
line 239, in savemessage
     date, content)[0] == 'OK')
   File "/usr/share/python-support/offlineimap/offlineimap/imaplib.py", line 
318, in append
     return self._simple_command(name, mailbox, flags, date_time)
   File "/usr/share/python-support/offlineimap/offlineimap/imaplib.py", line 
975, in _simple_command
     return self._command_complete(name, apply(self._command, (name,) + args))
   File "/usr/share/python-support/offlineimap/offlineimap/imaplib.py", line 
807, in _command_complete
     raise self.abort('command: %s => %s' % (name, val))
abort: command: APPEND => socket error: EOF


If I restart offlineimap, it will now do something like:
Syncing multimedia: IMAP -> Maildir
Copy message -2 Maildir[multimedia] -> IMAP[multimedia], LocalStatus[multimedia]
Copy message -21 Maildir[multimedia] -> IMAP[multimedia], 
LocalStatus[multimedia]
Copy message -20 Maildir[multimedia] -> IMAP[multimedia], 
LocalStatus[multimedia]


Seems it gets a bit further each time (except it always repeats the 
"Copy message -2"). It also seems to take a long time. If I do CTRL-C, 
it will print something like:

_sleep(delay)
KeyboardInterrupt


Any ideas?

Gilles