Starting in the spring of 2007, Daylight Saving Time (DST) start and end dates for the United States will transition to comply with the Energy Policy Act of 2005. DST dates in the United States will start three weeks earlier (2:00 A.M. on the second Sunday in March) and will end one week later (2:00 A.M. on the first Sunday in November).
This update includes the changes for the United States DST change for the components affected in Microsoft Exchange. It also includes changes for the time zones in Canada which will make the same change to their DST transition dates from 2007.
Download: Update for Daylight Saving Time changes in 2007 for Exchange 2003 Service Pack 1 (KB 93197
IMPORTANT
If you are using Microsoft Exchange Server 2003 Service Pack 1 (SP1) and you install this update, third-party services such as BlackBerry or GoodLink may be affected. Shared mailboxes and Microsoft Entourage delegation scenarios may also be affected.
Click the following article number to view the article in the Microsoft Knowledge Base before you install this update.
912918 Users cannot send e-mail messages from a mobile device or from a shared mailbox in Exchange 2000 Server and in Exchange Server 2003
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