Supporting Messaging Clients

Message Conversion

In Exchange, messages sent by Internet clients are stored in Multipurpose Internet Mail Extensions (MIME) format, and no message conversion takes place when the messages are read. Messages sent by MAPI clients are converted from Microsoft Rich Text Format (RTF) to MIME when read by Internet clients.

MIME provides a standardized way to represent and encode a wide variety of media types for transmission via Internet e-mail. Messages can contain text as well as graphics, audio, and video files. In addition, MIME supports messages in character sets other than ASCII. Each type of media that can be sent is associated with a file extension so that the media type can be recognized and displayed correctly. In Exchange there are many predefined MIME types, such as Graphics Interchange Format (GIF) files and PostScript files.