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Today, Exchange Team also released new rollup update for Microsoft Exchange 2010 SP3
After installtion of Rollup 5 for Exchange 2010 SP3 your Exchange version number will be raised to 18.104.22.168
Rollup 5 for Exchange 2010 SP3 can be downloaded here:
And description of new rollup you can find here:
As always we recommend to test this rollup in a test environment first.