Recipients of mail messages with inline attachments sent via the Mail application over Exchange servers may see their messages in garbled language or split over several attachments. The issue appears to be related to how Mail interacts with Exchange regarding the body of messages.
As a workaround, users can open Mail and choose:
Edit > Attachments > Always Insert Attachments at End of Message
* If you are sending images as attachments, try sending the message using Rich Text formatting. You can still make text bold, italicized, or underlined and your email should display properly to each recipient.
* Be sure to include any attachments at the end of your messages, after the body.