when receiving a OIM I see this in the log:

DEBUG:Transport:<<< MSG Hotmail Hotmail
       MIME-Version: 1.0\r\n
       Content-Type: text/x-msmsgsinitialmdatanotification; charset=UTF-8\r\n
       \r\n
       Mail-Data: <MD><E><I>0</I><IU>0</IU><O>0</O><OU>0</OU></E><Q><QTM>409600</QTM><QNM>204800</QNM></Q><M><T>11</T><S>7</S><RT>2009-06-16T12:21:29.663Z</RT><RS>0</RS><SZ>1062</SZ><E>jevad@libero.it</E><I>34E09150-8DEC-4BA0-9E51-6BFFA43BE8FA</I><F>00000000-0000-0000-0000-000000000009</F><N>jevad@libero.it</N></M><M><T>11</T><S>7</S><RT>2009-06-16T12:21:29.720Z</RT><RS>0</RS><SZ>960</SZ><E>jevad@libero.it</E><I>3C78757D-96D5-4E72-8816-F71DA0B5DF06</I><F>00000000-0000-0000-0000-000000000009</F><N>jevad@libero.it</N></M><M><T>11</T><S>7</S><RT>2009-06-16T12:21:33.437Z</RT><RS>0</RS><SZ>956</SZ><E>jevad@libero.it</E><I>08CFDF60-2297-4B3A-997B-E82799F39DFC</I><F>00000000-0000-0000-0000-000000000009</F><N>jevad@libero.it</N></M><M><T>11</T><S>7</S><RT>2009-06-16T12:21:41.317Z</RT><RS>0</RS><SZ>1016</SZ><E>jevad@libero.it</E><I>49D3D6E2-55D3-468F-8910-0F7C435ADA3F</I><F>00000000-0000-0000-0000-000000000009</F><N>jevad@libero.it</N></M></MD>\r\n
       Inbox-URL: /cgi-bin/HoTMaiL\r\n
       Folders-URL: /cgi-bin/folders\r\n
       Post-URL: http://www.hotmail.com\r\n
Traceback (most recent call last):
 File "/usr/lib/python2.6/dist-packages/pymsn/msnp/base.py", line
106, in _dispatch_command
   handler(command)
 File "/usr/lib/python2.6/dist-packages/pymsn/msnp/notification.py",
line 485, in _handle_MSG
   self._client.oim_box.sync(mail_data)
 File "/usr/lib/python2.6/dist-packages/pymsn/service/OfflineIM/offline_messages_box.py",
line 247, in sync
   self.__parse_metadata(xml_data)
 File "/usr/lib/python2.6/dist-packages/pymsn/service/OfflineIM/offline_messages_box.py",
line 264, in __parse_metadata
   search_by_network_id(network_id)[0]