2.2.2.30 PidTagNonDeliveryReportDiagCode Property
Type: PtypInteger32 ([MS-OXCDATA] section 2.11.1)
The PidTagNonDeliveryReportDiagCode property ([MS-OXPROPS] section 2.809) contains a diagnostic code for a non-delivery report. For more details, see [MS-OXCMAIL] section 2.2.3.7.1.3.