Handler unexpected BYEs during a FETCH

[caiobegotti]

Docs say that... "abort" exceptions imply the connection should be reset, and the command re-tried.

Traceback (most recent call last): File "./lpf.py", line 34, in imap.lostphotosfound() File "/tmp/Lost-Photos-Found/lostphotosfound/server.py", line 236, in lostphotosfound msgdata = self._server.fetch([msg], ['RFC822']) File "/usr/local/lib/python2.7/dist-packages/imapclient/imapclient.py", line 869, in fetch typ, data = self._imap._command_complete('FETCH', tag) File "/usr/lib/python2.7/imaplib.py", line 912, in _command_complete raise self.abort('command: %s => %s' % (name, val)) imaplib.abort: command: FETCH => System Error