Article ID: 940051 - View products that this article applies to.
In Microsoft Exchange Server 2007, you send an e-mail message that has the Request a Delivery Receipt option enabled. When you do this, the recipient information in the body of the message incorrectly contains the character string "%40" in the address instead of the at sign (@).
Additionally, you may receive a delivery status notification (DSN) message that resembles the following DSN message: Note In this example, the recipient address should be "firstname.lastname@example.org."
This problem occurs if you change the settings of the Exchange Server 2007 transport server to send a DSN message in plain text format. When you do this, the transport server generates a plain text DSN message that treats the at sign (@) as an escape character. Therefore, the at sign is replaced by the character string "%40."
Service pack informationExchange Server 2007 Service Pack 1 (SP1) was released on November 29, 2007.
To obtain Exchange Server 2007 Service Pack 1 (SP1), visit the following Microsoft Web site:
Update Rollup informationTo resolve this problem, install Update Rollup 5 for Exchange Server 2007. For more information about Update Rollup 5 for Exchange Server 2007, see the following Exchange Help topic:
Description of Update Rollup 5 for Exchange Server 2007For more information about how to obtain the latest Exchange service pack or update rollup, see the following Exchange Help topic:
How to Obtain the Latest Service Pack or Update Rollup for Exchange 2007
This problem was first corrected in Exchange Server 2007 Service Pack 1.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
To send a DSN message in plain text format, run the following command in the Exchange Management Shell:
Set-TransportServer -Identity server name -InternalDsnSendHtml: $falseFor more information, click the following article numbers to view the articles in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/824684/ )Description of the standard terminology that is used to describe Microsoft software updates
(http://support.microsoft.com/kb/817903/ )New naming schema for Exchange Server software update packages