Download Microsoft Exchange Server 2007 SP3 Rollup 23

Microsoft has already released the twenty-third Rollup for the third service pack of Exchange Server 2007. Service Pack 3 was released in June 2010. Mainstream support from Microsoft ended in April 2012, but extended support will run until April 2017. Only security and time zone updates will be implemented during this extended period. The corresponding KB article with number 4011325 mention very little about the changes, only mentioning that time zone updates have been made without further specifying them.

Update Rollup 23 for Exchange Server 2007 Service Pack 3

Update Rollup 23 for Microsoft Exchange Server 2007 Service Pack 3 (SP3) was released on March 21, 2017. Before you install this update rollup, see the Installation instructions.

This update also includes new daylight saving time (DST) updates for Exchange Server 2007 SP3.