| Platform SDK: MAPI |
The following are the origination properties for a message:
PR_ORIGIN_CHECK
PR_ORIGINATING_MTA_CERTIFICATE
PR_ORIGINATOR_AND_DL_EXPANSION_HISTORY
PR_ORIGINATOR_DELIVERY_REPORT_REQUESTED
PR_ORIGINATOR_NON_DELIVERY_REPORT_REQUESTED
PR_ORIGINATOR_RETURN_ADDRESS