In addition to Microsoft SmartScreen Technology, Outlook also offers Junk E-mail Lists. An Exchange Server account that delivers to a Personal Folders File (.pst).A Microsoft Exchange Server email account in Cached Exchange Mode (read the Knowledge Base article How to enable Cached Exchange mode in Outlook for more information).Note: Outlook Junk E-mail Filter technology can only be used with the following types of email accounts: Messages caught by the filter are moved to a special Junk E-mail folder, where you can access them later. In addition to server side spam filtering provided by Intermedia, Outlook uses its own SmartScreen filter technology, a client side filter. Outlook includes functionality to help reduce the amount of junk email messages, or spam, you receive in your Inbox. For more information read How Do I Completely Disable The Junk Email Filter For My Exchange Mailbox? Important: for Email Protection to work properly, Junk Email filtering should be enabled in OWA and disabled in Outlook client.