Microsoft KB Archive/183588

= XFOR: cc:Mail User Receives NDR When replying to POP3 Sender =

Article ID: 183588

Article Last Modified on 10/28/2006

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APPLIES TO


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

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This article was previously published under Q183588



SYMPTOMS
When a cc:Mail user replies to a message sent from an Exchange POP3 user, the cc:Mail user may receive the following non-delivery-report:

  Your message was not delivered to all recipients. Subject: Sent:   

The message was not delivered to the following recipient(s): , The recipient name is not recognized MSEXCH:IMS::: 0 (000C05A6) Unknown Recipient

A closer examination of the recipient address shows a comma in front of the user name.



CAUSE
The POP3 sender's e-mail Address or reply address (configured in the POP3 client) does not match the Exchange users SMTP address (located in the Exchange Admin properties, E-mail addresses tab, SMTP address type).



RESOLUTION
In the POP3 client, set the "E-Mail Address" or "Reply Address" configuration to the same SMTP address found in the Exchange Admin properties, E-mail addresses tab, SMTP address type.

Keywords: kbprb KB183588

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