Microsoft KB Archive/175707

= XFOR: Return Address From MSMail User Reads SMTP:IMCEAMS =

Article ID: 175707

Article Last Modified on 10/28/2006

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APPLIES TO


 * Microsoft Exchange Server 5.5 Standard Edition
 * Microsoft Exchange Server 4.0 Standard Edition
 * Microsoft Exchange Server 5.0 Standard Edition

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This article was previously published under Q175707



SUMMARY
When a Microsoft Mail user sends mail through the Microsoft Mail Connector and then out to the Internet using the Internet Mail Service, the Reply address may have the following format:

  My Name [SMTP:IMCEAMS-msnet_mspo_myname@company.com]



MORE INFORMATION
This is known as an encapsulated address. This only occurs when the Microsoft Mail user does not have a Custom Recipient defined on the Exchange Server computer. The Internet Mail Service "encapsulates" the address to give the recipient of the message a route back to the sender.

When the message is replied to, it is routed back to the Internet Mail Service that sent the message (@company.com in this example). The Internet Mail Service then removes the encapsulation and "pulls out" the 10\10\10 address for the Microsoft Mail user (MSNET\MSPO\MYNAME in this example). The Exchange Server computer then routes the message to Microsoft Mail based on its routing tables.

Additional query words: XFOR, IMS, SMTP, encapsulate, IMSEAMS

Keywords: KB175707

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