About CDO for Windows 2000

Exchange Server 2003

Topic Last Modified: 2004-06-08

Collaboration Data Objects (CDO) for Microsoft® Windows® 2000 (Cdosys.dll), which implements the 2.0 version of the Collaboration Data Objects API specification, is a Component Object Model (COM) component designed to simplify writing programs that create or manipulate Internet messages. CDO for Windows 2000 is one in a suite of collaborative COM components referred to collectively as CDO. CDO for Windows 2000 is an integral part of the Windows 2000 series of operating systems.

CDO for Windows 2000 provides COM classes that expose dual interfaces that you can use in applications written in languages supporting COM and Automation, such as Microsoft Visual Basic®, Microsoft Visual C++®, Microsoft Visual J++®, and scripting languages such as Visual Basic, Scripting Edition. It is designed for creating both client and server applications for computers running Windows 2000, and supports creating and managing messages formatted and sent using Internet standards such as the Multipurpose Internet Mail Extensions (MIME) standard. The CDO for Windows 2000 component supports sending messages using both the SMTP and NNTP protocols, as well as through a local SMTP/NNTP service pickup directory.