4.2.2 Identify Delegator Server and Mailbox

Because this Meeting Request object is received on behalf of the delegator, the next step is to identify the server and mailbox for the delegator and log on to the delegator's mailbox. The server is identified by the value of the PidTagAddressBookHomeMessageDatabase property ([MS-OXOABK] section 2.2.4.37) returned by the NspiGetProps method, as described in [MS-NSPI], and because the PidTagAddressBookProxyAddresses property ([MS-OXOABK] section 2.2.3.23) does not have a "MAILBOX" or "EX" entry, the mailbox is identified by the value of the PidTagEmailAddress property ([MS-OXOABK] section 2.2.3.14).

 NspiGetProps
     ...
     0x8006001f PidTagAddressBookHomeMessageDatabase           PtypString
         /o=First Organization/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Configuration/cn=Servers/cn=3659R9-A13/cn=Microsoft Private MDB
     0x3003001f PidTagEmailAddress           PtypString
         /o=First Organization/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Recipients/cn=delegator1
     0x800f101f PidTagAddressBookProxyAddresses    PtypMultipleString
         PtypMultipleString[0]: SMTP:delegator1@jlvpno-dom.extest.microsoft.com
     ...