The PR_SENDER_ENTRYID property contains the message sender's entry identifier.
| Header file: | MAPITAGS.H |
| Must be exposed by: | Message objects |
| Identifier: | 0x0C19 |
| Property type: | PT_BINARY |
| Property tag: | 0x0C190102 |
| Corresponding X.400 attribute: | IM_ORIGINATOR |
The PR_SENDER_ENTRYID property is one of the address properties for the message sender. It must be set by the outgoing transport provider, which should never propagate any previously existing values.
If no transport provider has supplied any sender address properties, the MAPI spooler attempts to fill them in by calling the IMAPISession::QueryIdentity method for an entry identifier. If no entry identifiers have been provided, the MAPI spooler stores in PR_SENDER_ENTRYID an identifier corresponding to the string "Unknown."
For more information on the address properties, see Base Address Properties.
Sender Properties, PR_ENTRYID, PR_SENT_REPRESENTING_ENTRYID