Extended characters are replaced by question marks when you send an e-mail message that contains extended ASCII characters by using an IMAP4 client in Exchange 2007

Article translations Article translations
Article ID: 960703 - View products that this article applies to.
This article has been archived. It is offered "as is" and will no longer be updated.
Expand all | Collapse all


Consider the following scenario. In Microsoft Exchange Server 2007, you send a message by using an IMAP4 client. The message contains extended ASCII characters, such as ê, ä, and so on. In this scenario, when another user receives the message, the extended ASCII characters are replaced with question marks.


When an Exchange 2007 server receives an APPEND command from the IMAP4 client for the message body in separate packets, an incorrect conversion occurs. This causes the extended ASCII characters to be replaced with question marks.


To resolve this problem, install Update Rollup 8 for Exchange 2007 Service Pack 1.

For more information about Update Rollup 8 for Exchange Server 2007 Service Pack 1, see the following Exchange Help topic:
Description of Update Rollup 8 for Exchange Server 2007 Service Pack 1
For 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


For more information about IMAP4 and the APPEND command, visit the following RFC Web site:

For more information about Extended ASCII character, visit the following Microsoft Web site:


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.


Article ID: 960703 - Last Review: January 15, 2015 - Revision: 1.1
  • Microsoft Exchange Server 2007 Service Pack 1, when used with:
    • Microsoft Exchange Server 2007 Standard Edition
    • Microsoft Exchange Server 2007 Enterprise Edition
kbnosurvey kbarchive kbqfe kbsurveynew kbhotfixrollup kbexpertiseadvanced KB960703

Contact us for more help

Contact us for more help
Connect with Answer Desk for expert help.
Get more support from smallbusiness.support.microsoft.com