2.2.5.3 PidTagAddressBookIsMemberOfDistributionList
Data type: PtypString8 ([MS-OXCDATA] section 2.11.1) in an OAB file, PtypEmbeddedTable ([MS-OXCDATA] section 2.11.1.5) when returned from an NSPI server.
The PidTagAddressBookIsMemberOfDistributionList property<41> ([MS-OXPROPS] section 2.546) is an Address Book object that lists all the distribution lists for which a specified object is a member.