I use Serviio as DLNA server hosted on Ubuntu to stream movies to Xbox One. It’s by far the best DLNA server I have used. Very easy to set up and quite feature rich. Here’s the guide to installing it on Ubuntu Server: http://wiki.serviio.org/doku.php?id=howto:linux:install:ubuntu
You can make it run at boot time by creating a service in Webmin.
To configure you will need to download Windows Client.