Microsoft has released Service Pack 2 (SP2) for Exchange Server 2007.
The 800+MB download is just like SP1 – a full install package that incorporates the Service Pack. Existing installations can be upgraded, as new installs can be completed with the Service Pack integrated.
Microsoft states: Microsoft Exchange Server 2007 Service Pack 2 (SP2) has been designed specifically to help meet the challenges of any business and the needs of all the different groups with a stake in the messaging system. Exchange Server 2007 SP2 is a mission-critical communications tool that enables employees to be more productive and access their information anywhere and anytime while providing a messaging system that enables rich, efficient access to e-mail, calendar items, voice mail, and contacts. For the administrator, Exchange Server 2007 SP2 provides advanced protection options against e-mail security threats, such as spam and viruses, as well as the tools to help manage internal compliance and high availability needs.
Service Pack 2 also includes the much anticipated backup option that the product group announced in May. It also includes some key components that allow for coexistence with Exchange 2010.
Service Pack 2 requires Windows Installer 4.5, which will require a reboot once installed.
The Service Pack can be downloaded in both x86 and x64 flavors here.