What is a Microsoft Exchange Server account?
Microsoft Outlook 2013 supports multiple account types such as Microsoft Exchange Server, POP3, IMAP, and Outlook.com (formerly Hotmail).
Some features in Outlook 2013 require a Microsoft Exchange Server account. Exchange is a collaborative communications server that is used by many organizations. Microsoft Office 365 includes Exchange Online and some Internet hosting providers also offer Exchange accounts.
If an Exchange account isn’t configured in Outlook, some commands and options mentioned in the Outlook Help might not appear.
Review accounts and account types configured in Outlook
Click File > Account Settings > Account Settings.
On the Email tab, the Type column lists the type of account for each entry.
An Exchange account is listed as Microsoft Exchange.
Exchange version specific features
Some Outlook features require specific versions of Exchange. If you are using an Exchange account, see Determine the version of Microsoft Exchange Server my account connects to.