Consider the following scenario:
You send a Multipurpose Internet Message Encoding (MIME) email message by using Microsoft Exchange Web Services (EWS) in a Microsoft Exchange Server 2010 environment.
The Content-Disposition header for an attachment is set to inline.
The message format is plain text.
In this scenario, the inline contents disposition may be removed. Additionally, the attachment is not displayed as "inline" with the email message body in some client applications.
This issue occurs because EWS incorrectly removes the inline contents disposition when the content is converted to MAPI format.
To resolve this issue, install the following update rollup:
2645995 Description of Update Rollup 1 for Exchange Server 2010 Service Pack 2
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about EWS, visit the following Microsoft website:
General information about EWSFor more information about the Content-Disposition: inline header, visit the following Microsoft website:
General information about the Content-Disposition: inline headerFor more information about the content conversion process, visit the following Microsoft website:
General information about the content conversion process
For more information about the TNEF format, visit the following Microsoft website: