| Attribute | Must | Description |
|---|---|---|
| Anonymous-Account | Anonymous IMAP account | |
| Delegate-User | False=User doesn't have access to other mbx; True=User has access to other mbx | |
| Folder-Pathname | The OWA server to use for special message classes | |
| Form-Data | Outlook Web Access form data for S+ access | |
| Help-Data32 | Outlook Web Access Form data for S+ access | |
| List-Public-Folders | True=List Public Folders, False=Don't list Public Folders | |
| OWA-Server | Not Used! | |
| Return-Exact-Msg-Size | Return exact message size for IMAP client's like PINE |