Exchange OMA Event ID 1503

I've been troubleshooting what I believe is a problem with the OMA virtual directory.  It's a SBS 2003 environment.  IIS is hosting OWA with SSL with no problem.  OMA is not working.  When I go to https://mail.mydomain.com/oma I get to put in my username and password then it comes back with
"A System error has occurred while processing your request. Please try again. If the problem persists, contact your administrator."

At the same time I get the Event ID 1503.

Event Type:      Error
Event Source:      MSExchangeOMA
Event Category:      (1000)
Event ID:      1503
Date:            12/27/2008
Time:            1:44:42 AM
User:            N/A
Computer:      SERVER1
Description:
An unknown error occurred while processing the current request:
Message: The remote server returned an error: (400) Bad Request.
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)


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I have followed M$ article for creating the exchange-oma directory.
I've followed the article to delete all the exchange directories in default web site and letting system attendant recreate them, to no avail.

I'm really lost now on what to look at.  I've even ran the wizards in SBS, I'm desperate.  

The only thing that has changed recently is the the ip addresses when we moved offices.  Previously we used the 192.168.x.x now we are using the 10.1.10.x scheme.