Mark works as a System Analyst for Blue Well Inc. He uses Microsoft Outlook for messaging and e- mailing. MS Outlook has been configured to use an IMAP account. He schedules some meeting requests…

Mark works as a System Analyst for Blue Well Inc. He uses Microsoft Outlook for messaging and e- mailing. MS Outlook has been configured to use an IMAP account. He schedules some meeting requests and events for the sales ratio project of the company. He sends the meeting requests to the CEO and the Manager of the sales department. However, recipients view Mark as busy, when in reality he is free and does not have any appointment. Which of the following is the cause of the issue?