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I'm new to Exchange 2010 and have been tasked with renaming hundreds of Distribution Groups. It involves across the company title changes. <br />
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Example - Rename GroupDSM@mycompany.com to GroupRSM@mycompany.com. Each group has 4 SMTP addresses in which the DSM has to change to RSM. There are many other groups with DSM in the names (Alias, Description, Display Name, SMTP, etc.).<br />
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Is there a cmdlet to accomplish this?
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I'm new to Exchange 2010 and have been tasked with renaming hundreds of Distribution Groups. It involves across the company title changes. 

Example - Rename GroupDSM@mycompany.com to GroupRSM@mycompany.com. Each group has 4 SMTP addresses in which the DSM has to change to RSM. There are many other groups with DSM in the names (Alias, Description, Display Name, SMTP, etc.).

Is there a cmdlet to accomplish this?

Exchange 2010 - Bulk Rename of Distribution Groups

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.