You cannot read an email message by using an IMAP client in an Exchange Server 2010 environment

Consider the following scenario:

• You connect to a Microsoft Exchange Server 2010 Client Access server by using an Internet Message Access Protocol (IMAP) client.
• You use the IMAP client to query information about a single part of an email message.
• The Content-Disposition field in the Simple Mail Transfer Protocol (SMTP) header of the email message contains no parameters.

In this scenario, you cannot read the email message by using the IMAP client.


For example, you query information about an email message that has the following SMTP header:

Content-Type: text/plain; charset="iso-2022-jp"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

Note The IMAP client cannot read the message because the Content-Disposition field contains no parameters.

However, an IMAP client can query information about an email message that has the following SMTP header:

Content-Type: text/plain; charset="iso-2022-jp"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline; filename="test.txt"