When applying attachment in mail.app you are allowed to add your attachment anywhere in your body part. If you place it in between some text you end up with two attachment instead of one.  One with your acctual attachment and one with the text below where you placed your attachment in the mail.

Here is a ”solution” or should I say workaround at Apple support


If you send messages with attachments via a Mail account that uses a Microsoft Exchange server, recipients of the message may see the text of the message as garbled, or split into several attachments.


As a workaround: In Mail, choose Attachments > Always Insert Attachments at End of Message from the Edit menu.

Additional Information


  • If you are sending only images as attachments, send the message as Rich Text–add some rich text formatting, such as bold or italicized text, or a bulleted list.
  • Alternatively, make sure to insert your attachments at the end of your message, after the body of the message.
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Exchange 2010 no longer has the setting. Exchange 2003 IMAP4 client use the streaming store (.stm file) for reading and writing mailbox data that is stored as MIME content. If you use the Move Mailbox functionality in Exchange System Manager or Active Directory Users and Computers to move a mailbox that is accessed by an IMAP4 client, the data in the moved mailbox is promoted into the Extensible Storage Engine store (.edb file), and the content is converted from MIME content to MAPI content. When the IMAP4 client logs on, exact message sizes are calculated, and MAPI-to-MIME conversion of the mailbox data occurs in memory and on the disk of the server.
Fast message retrieval improves performance of the MAPI-to-MIME conversion.

Exchange 2010 no longer use .stm file.

More information

Enable Fast Message Retrieval for IMAP4

Understanding the Exchange 2010 Store

Answer from Jerome Xiong

Support for fast message retrieval

Fetching the body of an e-mail message was also possible in Exchange server 2003 SP2, but has been improved further with Exchange Server 2007. For example, you no longer need to select Mark for download or click Get the rest of this message, instead this will happen automatically in the background and thereby make the end-user experience even better.

Link: http://social.technet.microsoft.com/Forums/en-US/exchange2010/thread/d599ae36-0b0e-429c-b6a9-f7c8121764e7/
Link: http://technet.microsoft.com/en-us/library/aa996406(EXCHG.65).aspx
Link: http://geekswithblogs.net/BWCA/archive/2010/01/25/imap4-fast-message-retrieval.aspx

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Exchange 2007 SP2 upgrade

On 2010-02-19, in Exchange 2007, Mailserver, by Mattias Jönsson

SP2 adds support for Windows Powershell v2, and allows coexistence with Exchange Server 2010. SP2 also adds support for VSS backups of Exchange 2007 on Windows Server 2008.
Exchange 2007 SP2 updates the Active Directory schema. Details of schema changes, including new attributes and classes, and modifications to existing ones can be found in Active Directory Schema Changes (SP2).

Note, once you install SP2, you cannot uninstall it without uninstalling Exchange 2007 from the server.

Microsoft recommends upgrading Exchange 2007 servers in the following order:

  1. Client Access Servers (CAS)
  2. Unified Message (UM) servers
  3. Hub Transport servers
  4. Edge Transport servers
  5. Mailbox servers

More details and important deployment considerations in Exchange 2007 SP2 Release Notes.


What’s New in Exchange Server 2007 SP2

Exchange 2007 Service Pack 2 Prerequisites

CCR upgrade:

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