CRM2011 E-Mail-Router: Type ‘System.ServiceModel.Channels.ReceivedFault’ … is not marked as serializable

During an setup od an customer today we get an Issue with the email Router profiles. Issue Details: Microsoft Dynamics CRM 2011 with Email Router for Dynamics CRM 2011 Customer use an up-to-date Exchange 2010 servers. Outgoing shall use SMTP. When clicking the button “Test Access” we get for incoming Outgoing Status: Failure – Type…

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