Exchange Server MAPI Client and Collaboration Data Objects 1.2.1 version 6.5.8069.0 was recently released.
Starting with Exchange 2007, neither the Messaging API (MAPI) client libraries nor CDO 1.2.1 are provided as a part of the base product installation. As a result, there is functionality missing that many applications depend on. Microsoft Exchange MAPI and CDO 1.2.1 provide access to these APIs
The Messaging API is a COM-like API that provides access to the contents of messaging stores. CDO 1.2.1 (Collaboration Data Objects, version 1.2.1) is a package providing access to Outlook-compatible objects through a COM-based API. Using either CDO or MAPI, a program can connect to a MAPI store, and then perform operations against that store. Starting with Exchange 2007, Microsoft will distribute the MAPI client libraries and CDO 1.2.1 as a Web download.
New in this version:
– This version (The MSI package) is now compatible with Windows Vista and Windows Server 2008. The older version (The EXE package) is being temporarily provided until August 15, 2008 as a service to customers of ISVs that have not completed their validation process on the new package. Note also that this web release follows the Microsoft Lifecycle policy of Exchange Server 2003, which goes into Extended Support in April 2009. It is recommended that new Exchange development leverage Exchange Web Services, the Outlook Object Model, or the Outlook MAPI Client Library.