exchange 2010 支持的exchange组织模式支持以下四种模式

1/ Pure Exchange 14

2/ Mixed Exchange 14 and Exchange 2007 Service Pack 2

3/ Mixed Exchange 14 and Exchange 2003 Service Pack 2

4/; Mixed Exchange 14, Exchange 2007 Service Pack 2 and Exchange 2003 Service Pack 2

如果exchange 2010安装的时候检测到当前环境部满足，会停止安装。

以上，exchange 2010 可以与现有的exchange 2003混存。这也为推进用户的升级和平稳升级提供了便利。

下列是受支持的混存状态

　Scenario

Internet Facing Site

Non-Internet Facing Site

1 Exchange 14 Exchange 2007

2Exchange 14 Exchange 2007 and Exchange 14

3 Exchange 2007 and Exchange 14 Exchange 2007

4 Exchange 2007 and Exchange 14 Exchange 2007 and Exchange 14

5 Exchange 2007 and Exchange 14 Exchange 14

下列是不受支持的混存状态:

Scenario

Internet Facing Site

Non-Internet Facing Site

6 Exchange 2007 Exchange 2007 and Exchange 14

7 Exchange 2007 Exchange 14