Univention Corporate Server 4.0-3 发布，最主要的更新内容如下：
- The mail server Dovecot has been integrated as standard IMAP/POP3 server into UCS and offers an alternative to the still available Cyrus IMAP server. More information is available inthis blog article.
- The compatibility to Active Directory has been improved with the Samba update to 4.2.3. This includes, among others, improvements in the DRS replication and the printer driver handling. In addition, the join of Huawai storage systems in the Active Directory domain provided by UCS is now also possible.
- Several enhancements in design and usability of the Univention Management Console have been implemented. For example, it is now possible to use the forward and back buttons of the web browser. This allows a simpler and faster navigation in the management interface.
- LDAP filters can now be defined for LDAP policies. That means the LDAP policy applies only to the objects that match the LDAP filter. This makes it possible to use LDAP policies in an easy and generic way especially in large environments.
- The Linux kernel has been updated to the latest stable version of the 3.16 longterm kernel. This includes several security updates as well as new and updated drivers for a better hardware support.
- All security updates released for UCS 4.0-2 are included in this update. It is now also possible to redirect all HTTP requests to HTTPS by only setting an Univention Configuration Registry variable. This increases the security of the UCS system.
Univention Corporate Server是一份企业级发行，它基于Debian GNU/Linux。其特色在于一份面向服务器集中式管理的集成管理系统，兼容微软Active Directory的域服务，以及面向虚拟服务器和桌面操作系统并行操作的功能。Univention Corporate Server是商业产品，但其功能有限的个人使用版除外。