Microsoft has shipped several Hosted Exchange Solutions since the year 2000 and we continue to invest in associated updates, upgrades, components, tools, and support in accordance with the Microsoft Support Lifecycle policy. All Hosted Exchange Solutions are made up of individual Microsoft products, such as Microsoft Windows Server, Microsoft Exchange Server, and Microsoft SQL Server. As such, support for Hosted Exchange Solutions is provided at the product level and follows the lifecycle of each individual product.
For example, the Microsoft Solution for Hosted Messaging and Collaboration (HMC) version 3.0 includes core products such as SQL Server 2000, Windows 2000 Server, and Exchange Server 2000, which are no longer supported by Microsoft. For a list of past and present HMC products, see Microsoft Hosted Solutions Version History.
In addition, many service packs for Hosted Messaging and Collaboration 3.0 core products are no longer supported. See Lifecycle Supported Service Packs for more information.
If you or your service provider are using a Hosted Exchange Solution that includes a Microsoft product that has moved out of Microsoft’s mainstream support phase or extended support phase, we recommend that you contact Microsoft Consulting Services or a systems integrator. They may be able to help you upgrade to product(s) that are still in the mainstream support phase, such as Hosted Messaging and Collaboration version 4.0, which was released on 4/16/2007.
For a list of Microsoft partners who can help you with upgrading your current solution, see Hosted Messaging and Collaboration partners.