DOCUMENT:Q163080  19-DEC-1999  [exchange]
TITLE   :XFOR: Event 4081 Occurs When IMC Encounters Invalid Code Page
PRODUCT :Microsoft Exchange
PROD/VER:winnt:4.0,5.0,5.5
OPER/SYS:
KEYWORDS:kbtshoot kbusage exc4 exc5 exc55

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The information in this article applies to:

 - Microsoft Exchange Server, versions 4.0, 5.0, 5.5 
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SYMPTOMS
========

The following event may be logged in the Application Event Log when the
Microsoft Exchange Server Internet Mail Connector (IMC) receives an inbound SMTP
mail message:

   Event ID: 4081
   Source: MSExchangeIMC
   Type: Warning
   Category: Content Conversion
   Originator:  Subject: <message subject> Time: <date and time>
   Conversion failed while processing file
   d:\exchsrvr\imcdata\in\<file name>.

The IMC administrator may also receive the following mail notification:

   From: System Administrator
   Subject: Notification: Inbound Mail Failure - The message conversion
   failed.

   The message that caused this notification was:

      <message attachment>

The recipient of the message will receive the following mail notification:

   The Internet Mail Connector received a message that could not be
   processed.
   View the original content by opening the attached message.

      <message attachment>

CAUSE
=====

This error may occur when the inbound SMTP mail message contains a reference to
a character set that is not installed on the Microsoft Exchange Server. To
verify this as the source of the problem, look for following field in the SMTP
header of the message (there may be more than one):

   Content-Type: <content type>; charset=<character set id>

Verify that the Microsoft Exchange Server computer has the proper code page
installed for the character set referenced by charset.

RESOLUTION
==========

To avoid receiving the content conversion error stated above, install the proper
code page for the character set referenced in the mail message.

For additional information on how to add code pages to a Windows NT Server using
the Control Panel, International, Language applet, please see the following
article in the Microsoft Knowledge Base:

   Q151701 How to Manually Add Code Pages for Mixed Languages

Additional query words:

======================================================================
Keywords          : kbtshoot kbusage exc4 exc5 exc55 
Technology        : kbExchangeSearch kbExchange500 kbExchange550 kbExchange400 kbZNotKeyword2
Version           : winnt:4.0,5.0,5.5
Issue type        : kbprb

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