When you create an Exchange mailbox for a user there are 3 protocols enabled by default:

    • OWA
      • web-based version of the Outlook email program;
      • direct live connection to the mail server;
      • shared Calendar, Contacts, Tasks, Notes and free/busy information for scheduling; public folders;
      • Out of Office Assistant;
      • Server-side rules and alerts;
      • Optional server-side spam management;
    • IMAP - a protocol used to access messages on the server. IMAP keeps a live connection to the mail server.
    • POP - a protocol used to retrieve messages from the server. Messages will be downloaded locally and removed from the mail server.

SMTP protocol is disabled by default for all newly created mailboxes.

    • SMTP - basic protocol used for sending e-mail over the Internet

You can find and manage these protocols under HostPilotĀ® Control Panel > Services > Mailboxes > Exchange Mailboxes > select a mailbox > Advanced settings 

Advanced Settings

Note: even if all protocols are disabled under Advanced settings, Outlook desktop application still can be configured for an Exchange mailbox using MAPI protocol.