I am getting a message

Task 'na@narroyo.us: Folder:Inbox Check for new mail.' reported error (0x800CCC0E) : 'Outlook cannot download folder Inbox from the IMAP email server for account na@narroyo.us. Error: Cannot connect to the server. If you continue to receive this message, contact your server administrator or Internet service provider (ISP).' is the server down?