In normal circumstances, Outlook would configure itself using a procedure called Autodiscovery: all server settings and logon names would be configured by downloading configuration settings from a certain site, eliminating the requirement to know any server settings. Office 365 also makes extensive use of Autodiscovery for this and other purposes. In case of migrations, or when Autodiscovery is not available or does not apply (e.g. Outlook 2007), you can also manually configure your Office 365 account. Although this used to be pretty straight-forward, since they moved to Exchange 2013, manual configuration of Outlook has become a bit more complex.

Since its upgrade to Exchange 2013, Office   ...