In this case Outlook 2013 email client is configure for Office 365 to manage emails.
Open Control Panel and Click Mail
Add a new Profile
Select manual setup
Choose Microsoft Exchange server or compatible services
Enter the details and select more settings..
Go to Security tab
choose Anonymous Authentication for the Logon network security
Go to Connection tab
Tick Connect to Microsoft Exchange using HTTP and Click Exchange Proxy Settings
Configure Microsoft Exchange Proxy settings and press OK
Select only connect to proxy servers that have this principal name in their certificate: and type
Select Basic Authentication as Proxy authentication settings
Open Outlook 2013 client