You can download and install the 180-days trial version of Microsoft Exchange Server 2016 from Microsoft website. Following are the few steps I have listed below.
Download Microsoft Exchange Server 2016
- Open the following link in your favorite browser, https://www.microsoft.com/en-pk/download/details.aspx?id=49161
- Read the requirements listed on that page.
- Click the 'Download' button and the download will start automatically. If it doesn't install, click on 'Click here' link.