How to disable the "Sent by Microsoft Exchange Server 2007" branding sentence in an Exchange Server 2007 DSN message

When you receive a delivery status notification (DSN) that is sent from Microsoft Exchange Server 2007, you see a branding message that resembles the following:

Update information

To disable the branding message, download and install Update Rollup 3 for Exchange Server 2007 Service Pack 1 (SP1) on the Exchange server. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
After you apply this software update, you can use powershell to disable the branding by using the following command: Note You do not have to restart services on the Exchange server. By default, the message in the DSN is enabled. If the WritingBrandingInDSNEnabled parameter is set to true, there is no change. If the WritingBrandingInDSNEnabled parameter is set to false, the branding message does not appear for recipients who are inside or outside the organization.