The following properties sometimes appear with report messages:
PR_ORIGINAL_AUTHOR_ADDRTYPE
PR_ORIGINAL_AUTHOR_EMAIL_ADDRESS
PR_ORIGINAL_AUTHOR_ENTRYID
PR_ORIGINAL_AUTHOR_NAME
PR_ORIGINAL_AUTHOR_SEARCH_KEY
PR_ORIGINAL_SENT_REPRESENTING_ADDRTYPE
PR_ORIGINAL_SENT_REPRESENTING_EMAIL_ADDRESS
PR_ORIGINAL_SENT_REPRESENTING_ENTRYID
PR_ORIGINAL_SENT_REPRESENTING_NAME
PR_ORIGINAL_SENT_REPRESENTING_SEARCH_KEY
PR_ORIGINAL_SENDER_ADDRTYPE
PR_ORIGINAL_SENDER_EMAIL_ADDRESS
PR_ORIGINAL_SENDER_ENTRYID
PR_ORIGINAL_SENDER_NAME
PR_ORIGINAL_SENDER_SEARCH_KEY