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Great! Thanks for your help guys.
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I'm going install the latest roll up for Exchange 2010 sp1. Should these roll ups be installed on all the Exchange roles? Where can I find information on which roles these roll ups should be installed on?<br />
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Thanks.
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I'm going install the latest roll up for Exchange 2010 sp1. Should these roll ups be installed on all the Exchange roles? Where can I find information on which roles these roll ups should be installed on?

Thanks.

Exchange 2010 sp1 roll-ups

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.