188.8.131.52 PidTagJunkAddRecipientsToSafeSendersList Property
The PidTagJunkAddRecipientsToSafeSendersList property ([MS-OXPROPS] section 2.748) MUST be set to either 0 (zero) or 1. The value 1 indicates that the mail recipients are to be added to the safe senders list. The value zero indicates that the mail recipients are not to be added to the safe senders list. The safe senders list is a collection of e-mail addresses that represent senders whose messages are never marked as spam.