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You configure Microsoft Forefront Security for Exchange Server to send e-mail notifications for events such as virus detections, file filtering, and scan engine updates. However, you notice that the sender of the notifications is not the e-mail address that you set in the following registry subkey.
For 32-bit systems:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Forefront Server Security\Notifications\FromAddress
For 64-bit systems:
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Forefront Server Security\Notifications\FromAddress
To resolve this problem, install Forefront Security for Exchange Server Service Pack 2 (SP2). For more information, click the following article number to view the article in the Microsoft Knowledge Base:
960465 Description of Forefront Security for Exchange Server with Service Pack 2