Protocols (Regular Profile) : Managing Permissions for Protocols : Access Rights : MAPI
  
MAPI
Access rights applicable to the MAPI protocol:
•Generic: Send/Receive Data - The right to connect the Outlook client to Microsoft Exchange Server and read e-mail.
•Generic: Outgoing Messages - The right to send e-mail messages without attachments from the Outlook client to Microsoft Exchange Server.
•Generic: Outgoing Files - The right to send e-mail attachments from the Outlook client to Microsoft Exchange Server.
 
Note: By default, the access rights for the MAPI protocol also apply to draft folder messages that Outlook saves to the Exchange Server, and to messages being sent to the Exchange Server from e-mail message export files (.msg files) or other (external) mailboxes. This behavior can be changed by disabling the Intercept draft MAPI messages and/or Intercept moved MAPI messages setting (see Managing Security Settings for Protocols).