This post is also available in: Polish
At 12/09/2014 Exchange Team released rollup 15 for Microsoft Exchange Server 2007 SP3.
This update can be downloaded here:
Update Rollup 15 for Exchange Server 2007 Service Pack 3
List of changes included in this rollup you can find here: KB2996150
Update raises your Exchange Server 2007 SP3 version to 8.3.389.2