Hi,<BR><BR>I am trying to logon to an exchange mailbox from ASP using CDO.<BR>The code i have used is as follows where the strMachineName has been assigned the servername value and the strMailbox has been assigned the alias of an existing mailbox:<BR><BR>Set objCurSession = CreateObject("MAPI.Session")<BR>Response.Write objCurSession.OperatingSystem<BR> <BR>objCurSession.Logon , , , , , , strMachineName & vbLF & strMailbox<BR><BR><BR>The MAPI session is created successfully as the response.write line writes out the OS details successfully but when it reaches the logon line it gives the error:<BR><BR>Collaboration Data Objects error &#039;000004f7&#039; <BR><BR>[Collaboration Data Objects - [MAPI_E_NOT_FOUND(8004010F)]] <BR><BR>I cannot see why this should produce an error, has anyone experienced this or know why it might be happening?<BR><BR>thanks,<BR><BR>Nick<BR>