Windows Server 2008 Conecting to Coldfusion 9 Tags

Im having a problem attaching to Windows server 2008 with the exchange tags in coldfusion 9.
We took the username and password out and we get a access denied error.
We put them in and we get the following screenshot error.

Here is the code I am working with

<CFEXCHANGECONNECTION

  action="open"

  username="windowsusername"

  password="windowspassword"

  server="10.10.10.6"

  connection="conn1">

<!--- Create a structure with the task fields. --->

<CFSET stask = StructNew()>

<CFSET stask.Priority = "high">

<CFSET stask.Status = "Not_Started">

<CFSET stask.DueDate = MakeODBCDate("08/10/2012")>

<CFSET stask.Subject = "Johns Task Test">

<CFSET stask.PercentCompleted = 0>

<CFSET Message = "Hello John!">

<!--- Create the task by using a transient connection. --->

<cfexchangetask action = "create"

  connection="#conn1#"

  task = "#stask#"

  result = "theUID">

<CFEXCHANGECONNECTION

  action="close"

  connection="conn1">

When run I get the error “Unable to connect to the Exchange server using HTTP/HTTPS protocol”

I am assuming it’s a setting somewhere, but I wouldn’t have a clue where to look.  If you could help I would be very grateful.