I have been trying to connect ot exchange 2003 server to extract emails messages in the inbox .

whats wrong with the connection string to connect to exchange 2003 server::::

string myConnString="Provider=EXOLEDB;DATA SOURCE= file://.backofficestorage/server/MBX/Administrator;Connect Timeout=30;"

OleDbConnection myConnection=new OleDbConnection(myConnString);
 myConnection.Open()
myConnection.Close()
 }

You should use WebDAV protocol if you work with Exchange 2003/2007. Check WebDAV .NET for Exchange.

/Erik