Is there any problem with sending messages (using agsXMPP) !?!

I m developping a client for instant messaging using agsXMPP as api and when sending messages from a client to another I m not receiving it in the other part ! I m not good in xml so I dont know if there is any problem ! here is the server log can any one help me please ? :

5TEST MESSAGETEST MESSAGE<not-authorized
jive.audit-20100318-000.log.zip (1490 Bytes)

any one have any idea ?

can any one help me please ? its really important !

I have extensively used agsXMPP with no problem whatsoever,

Hi,

did you login before sending your test packet? You did get a 401 not-authorized error.

<packet xmlns="http://www.jivesoftware.org" streamID="1cb32a2c" status="connected"    timestamp="mars 18, 2010 02:45:13:683 PM">
   <message xmlns="" type="error" to="amira/1cb32a2c">
      <body>LOOOOOOOOOOOOOOOOOOOOOOOOOL</body>
      <error code="401" type="auth">
         <not-authorized xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"/>
      </error>
   </message>
</packet>

LG