Exchange 2016 offers users with different Linux OS operating systems to login and use their Mail and Calendar accounts in several ways.

Instructions for Use 

Outlook Web App

OWA (Outlook Web App). 
By using OWA you can access all the Exchange resources (Mail, Calendar, Contact and Tasks).

3rd party software that emulate IMAP & EWS as "Evolution"

There are several “unofficial” ways to access Exchange, such as “Evolution” or other 3rd party software that emulate IMAP depending on your distributor and your version of OS.
Help (low priority) for this kind of solution is offered through the HelpDesk, ext. 4444.