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Q183588: XFOR: cc:Mail User Receives NDR When replying to POP3 Sender

Article: Q183588
Product(s): Microsoft Exchange
Version(s): WINDOWS:5.0,5.5
Operating System(s): 
Keyword(s): 
Last Modified: 07-APR-1999

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The information in this article applies to:

- Microsoft Exchange Server, versions 5.0, 5.5 
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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: <subject>
   Sent:    <Date, Time>

  The message was not delivered to the following recipient(s):
  ,<User name>
  The recipient name is not recognized
  MSEXCH:IMS:<Org>:<Site>:<servername> 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 <user> 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 <user> properties,
E-mail addresses tab, SMTP address type.

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Keywords          :  
Technology        : kbExchangeSearch kbExchange500 kbExchange550 kbZNotKeyword2
Version           : WINDOWS:5.0,5.5
Issue type        : kbprb

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