Hosted Exchange keeps “resolving” the CAS server FQDN when setting up Outlook…NOT GOOD

The way I read it, you have 2 mailbox databases - one in Site A for the users in Site A and another for Site B for the users in Site B. What's the output of Get-MailboxDatabase MailboxDBInSiteB | fl RpcClientAccessServer? Is it the CAS in Site A or Site B?

It should be the CAS in site B, but if it isn't try the cmdlet Set-MailboxDatabase MailboxDBInSiteB -RpcClientAccessServer CASInSiteB.

I can only show you the code that I had to go to so that my email triggered off a button in an Excel spreadsheet would work. They changed some things, so the old code didn't work so well.

Private Sub EmailBlahbutton_Click()

Dim mOutlookApp As Object
Dim OutMail As Object
Dim Intro As String

On Error GoTo ErrorHandler

Set mOutlookApp = GetObject("", "Outlook.application")
Set OutMail = mOutlookApp.CreateItem(0)

With Application
    .EnableEvents = False
    .ScreenUpdating = False
End With

'These are the ranges being emailed.
ActiveSheet.Range(blahblahblah).Select

'Intro is the first line of the email
Intro = "BLAHBLAHBLHA"

'Set the To and Subject lines.  Send the message.
With OutMail
    .To = "blahblah@blah.com"
    .Subject = "More BLAH here"
    .HTMLBody = Intro & RangetoHTML(Selection)
    .Send
End With

With Application
    .EnableEvents = True
    .ScreenUpdating = True
End With

ActiveSheet.Range("A1").Select
ActiveWindow.ScrollColumn = ActiveCell.Column
ActiveWindow.ScrollRow = ActiveCell.Row

Set OutMail = Nothing
Set mOutlookApp = Nothing

Exit Sub

ErrorHandler:
    Set mOutlookApp = CreateObject("Outlook.application")
    Resume Next

End Sub

Function RangetoHTML(rng As Range)
' Changed by Ron de Bruin 28-Oct-2006
' Working in Office 2000-2010
Dim fso As Object
Dim ts As Object
Dim TempFile As String
Dim TempWB As Workbook

TempFile = Environ$("temp") & "/" & Format(Now, "dd-mm-yy h-mm-ss") & ".htm"

'Copy the range and create a new workbook to past the data in
rng.Copy
Set TempWB = Workbooks.Add(1)
With TempWB.Sheets(1)
  .Cells(1).PasteSpecial Paste:=8
  .Cells(1).PasteSpecial xlPasteValues, , False, False
  .Cells(1).PasteSpecial xlPasteFormats, , False, False
  .Cells(1).Select
  Application.CutCopyMode = False
  On Error Resume Next
  .DrawingObjects.Visible = True
  .DrawingObjects.Delete
  On Error GoTo 0
End With

'Publish the sheet to a htm file
With TempWB.PublishObjects.Add( _
  SourceType:=xlSourceRange, _
  Filename:=TempFile, _
  Sheet:=TempWB.Sheets(1).Name, _
  Source:=TempWB.Sheets(1).UsedRange.address, _
  HtmlType:=xlHtmlStatic)
  .Publish (True)
End With

'Read all data from the htm file into RangetoHTML
Set fso = CreateObject("Scripting.FileSystemObject")
Set ts = fso.GetFile(TempFile).OpenAsTextStream(1, -2)
RangetoHTML = ts.ReadAll
ts.Close
RangetoHTML = Replace(RangetoHTML, "align=center x:publishsource=", _
                      "align=left x:publishsource=")

'Close TempWB
TempWB.Close savechanges:=False

'Delete the htm file we used in this function
Kill TempFile

Set ts = Nothing
Set fso = Nothing
Set TempWB = Nothing

End Function