Exchange 2003 OMA Using SSL Application Error Log Throws 1503 / 403 Forbidden Error

Hello,

I have exchange 2003 sp2 running on windows server 2003 sp1. We have ssl running on OWA and IIS and OMA.

I am getting errors when I try to sync a Treo 700w Verizon using active sync. Here is the application log error.

An unknown error occurred while processing the current request:
Message: The remote server returned an error: (403) Forbidden.
Source: Microsoft.Exchange.OMA.ExchangeDataProvider
Stack trace:
   at Microsoft.Exchange.OMA.ExchangeDataProvider.OmaWebRequest.GetRequestStream()
   at Microsoft.Exchange.OMA.ExchangeDataProvider.ExchangeServices.GetSpecialFolders()
   at Microsoft.Exchange.OMA.ExchangeDataProvider.ExchangeServices..ctor(UserInfo user)

Message: Exception has been thrown by the target of an invocation.
Source: mscorlib
Stack trace:
   at System.Reflection.RuntimeConstructorInfo.InternalInvoke(BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean isBinderDefault)
   at System.Reflection.RuntimeConstructorInfo.Invoke(BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at System.RuntimeType.CreateInstanceImpl(BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes)
   at System.Activator.CreateInstance(Type type, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes)
   at Microsoft.Exchange.OMA.UserInterface.Global.Session_Start(Object sender, EventArgs e)

Message: Exception of type Microsoft.Exchange.OMA.DataProviderInterface.ProviderException was thrown.
EventMessage:
UserMessage: A System error has occurred while processing your request. Please try again. If the problem persists, contact your administrator.
Source: Microsoft.Exchange.OMA.UserInterface
Stack trace:
   at Microsoft.Exchange.OMA.UserInterface.Global.Session_Start(Object sender, EventArgs e)
   at System.Web.SessionState.SessionStateModule.RaiseOnStart(EventArgs e)
   at System.Web.SessionState.SessionStateModule.CompleteAcquireState()
   at System.Web.SessionState.SessionStateModule.BeginAcquireState(Object source, EventArgs e, AsyncCallback cb, Object extraData)
   at System.Web.AsyncEventExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
----------------

At the same time I am getting a error message in the security log to this effect.


Logon attempt using explicit credentials:
 Logged on user:
       User Name:      NETWORK SERVICE
       Domain:            NT AUTHORITY
       Logon ID:            (0x0,0x3E4)
       Logon GUID:      -
 User whose credentials were used:
       Target User Name:      usernameLoginginwith
       Target Domain:      fqdn.domain.com
       Target Logon GUID: -

 Target Server Name:      name of my exch srvr
 Target Server Info:      HOST/name of my exch srvr
 Caller Process ID:      1128
 Source Network Address:      -
 Source Port:      -


Anyone have any clue as to what this is? It seems simple but we have been working on it for a whole night. We have read about 50 posts describing step after atep and they just dont work or they sound like they arent applicable to this situation. We are in the process of getting a cert from a trusted authority but I am not sure if that will work.

Please help.