2.2.7.6 PidTagDamOriginalEntryId Property
Type: PtypBinary ([MS-OXCDATA] section 2.11.1)
The PidTagDamOriginalEntryId property (section 2.2.6.3) SHOULD<10> be set to the EntryID of the message that was being processed by the server when this error was encountered (that is, the "delivered message").