CDONTS, CDOSYS, System.Web.Mail & System.Net.Mailhttp://blogs.msdn.com/deva/archive/2009/02/13/cdonts-cdosys-system-web-mail-system-net-mail.aspxMicrosoft Windows Server 2003 does not install Collaboration Data Objects (CDO) for NTS (CDONTS). Therefore, applications that use CDONTS do not function on a Windows Server 2003-based computer. Windows Server 2003 provides improved alternatives to CDONTS.en-USCommunityServer 2.1 SP1 (Build: 61025.2)