Exchange邮件系统-OpenChange
2013-05-20 14:35:28 
阿炯
OpenChange的目标是去实现微软在Outlook上使用的Exchange协议。OpenChange包括了用于Exchange整合的客户端和服务器端的库，主要依靠Samba 4开发的代码，采用了GPL V3许可证。Hards称客户端已告完成，他们正在为服务器端编写代码，但估计正式推出产品之前还需要12个月时间的开发。
OpenChange的目的不仅仅是发送邮件，而是覆盖了所有时间管理，客户端C++库源自Google Summer of Code的一个学生项目，Hards评论其代码很成熟。
OpenChange is a portable Open Source implementation of Microsoft Exchange server and Exchange protocols. It provides a complete solution to interoperate with Microsoft Outlook clients or Microsoft Exchange servers.
OpenChange client-side library is used in existing messaging clients and is the solution in new projects to communicate natively with Microsoft Exchange and Exchange-compatible servers. OpenChange server is a transparent Microsoft Exchange server replacement using native Exchange protocols and does not require any plugin installation in Outlook.
Features
Outlook AnyWhere (RPC over HTTP) support in OpenChange server
NTLM automatic negotiation for RoH clients
AutoDiscovery service implementation "AutoDiscovery Publishing Lookup Protocol Specification"
Ability to provision user accounts on Samba servers that are domain members
Ability to deprovision openchange schema from Samba4
Auto provisioning of mailboxes upon first authenticated client connection
Auto provisioning of FreeBusy data for the user
最新版本：2.0
官方主页：http://www.openchange.org/