@_cparker I ran the script found one Mailbox with App Id, that
application is already registered in Azure and having below API
Permission. Now, I need to create Management Scope for that application
and mailbox, correct? 1. First, I need to create Service Principal in
Exchange.New-ServicePrincipal -...
Thanks @tonysperbeck . Nice to know that we have that option, but I am
thinking that since the X header already shows the message as
'originating', as opposed to 'incoming', the message would already be
considered internal... ? Just looking for clarification on that.
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