Configure iphone4 exchange access

Configure iphone4 activesync access with exchange sp2 and windows server 2003 not SBS

We need to have iphone4 activesync access with exchange sp2 and windows server 2003 not SBS using a godaddy ssl certificate.

We get this from testexchangeconnectivity.com

Testing HTTP Authentication Methods for URL https://exchange.innov8recruit.com/Microsoft-Server-Activesync/.
The test passed with some warnings encountered. Please expand the additional details.
Tell me more about this issue and how to resolve it
Additional Details
The following authentication methods are enabled, but they aren't allowed authentication methods for this service. Methods: Negotiate, NTLM

An ActiveSync session is being attempted with the server.
Errors were encountered while testing the Exchange ActiveSync session.
Test Steps
Attempting to send the OPTIONS command to the server.
The OPTIONS response was successfully received and is valid.
Additional Details
Headers received: Pragma: no-cache
Public: OPTIONS, POST
Allow: OPTIONS, POST
MS-Server-ActiveSync: 6.5.7638.1
MS-ASProtocolVersions: 1.0,2.0,2.1,2.5
MS-ASProtocolCommands: Sync,SendMail,SmartForward,SmartReply,GetAttachment,GetHierarchy,CreateCollection,DeleteCollection,MoveCollection,FolderSync,FolderCreate,FolderDelete,FolderUpdate,MoveItems,GetItemEstimate,MeetingResponse,ResolveRecipients,ValidateCert,Provision,Search,Notify,Ping
Content-Length: 0
Date: Sun, 17 Apr 2011 13:58:53 GMT
Server: Microsoft-IIS/6.0
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Attempting the FolderSync command on the Exchange ActiveSync session.
The test of the FolderSync command failed.
Tell me more about this issue and how to resolve it
Additional Details
Exchange ActiveSync returned an HTTP 500 response.


This job needs to be done now, today, I'm sure it would take half an hour for the right guy

remote access is available for no cost