Symptoms

Microsoft Exchange Server 2007 does not support to assign a mailbox with the "Send on behalf" permission of a security group in the Exchange Management Console (EMC) or in the Exchange Management Shell (EMS).Note You can assign this permission to a mailbox by adding the security group as a delegate in Microsoft Office Outlook.

Resolution

To resolve this issue, install the following update rollup: 

2407025 Description of Update Rollup 2 for Exchange Server 2007 Service Pack 3

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

More Information

For more information about how to create a security group, visit the following Microsoft website:

How to create a security group

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