The most recent Exchange 2010 Service Pack 2 rollup update brings the total number of fixes in the two-year old product to 166 -- a large number that could be related to cloud computing.
Microsoft released rollup update 4 (RU4) for Exchange 2010 Service Pack (SP) 2 this week with 23 new fixes for customer- and internally reported issues, including one to help Exchange shops better meet compliance needs. There were 143 included in the three previous Exchange 2010 SP2 updates.
Some say the relatively high amount of fixes in SP2 is due to the option to run Exchange in the cloud.
"[Running Exchange in the cloud] may have exposed many new issues the [Exchange] team has not seen before," said Rob Sanfilippo, an analyst at Directions on Microsoft, a consulting firm based in Kirkland, Wash. "There is a new level of stress-testing here."
One important fix in this week's update addresses a message records management failure, where retention policies in an Exchange 2010 cloud-based archive mailbox weren't processed if the primary mailbox existed on premises.
Calendar and task retention support: New feature or fix?
Arguably the most important fix in RU4 addresses post-Exchange-2010-SP1 retention policies that don't work on calendar and task folders. Administrators could create retention policy tags and apply them to said folders, but the tags didn't do anything.
"This is essentially a feature-add. And though they're never expected, they are always appreciated," said Nicolas Blank, an infrastructure architect with NB Consult in Cape Town, South Africa.
IT pros might treat this update differently because calendar and task items are not handled the same way as normal message items. Further instructions and notes are laid out in the Exchange team's blog post.
More important Exchange 2010 SP2 RU4 fixes
The RU4 update also addresses two issues that caused the EdgeTransport.exe process to fail on an Exchange 2010 server. One fix addresses intermittent crashes, while the other addresses repeated crashes. Both occur because an "InvalidOperationException" triggers when the EdgeTransport.exe process handles email.
The update also remedies a problem that Microsoft marked as critical in a recent security bulletin. The fix closes an Exchange vulnerability where WebReady document viewing could allow for remote code execution, giving hackers back-door access to infiltrate Exchange Server.
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