Yesterday while the server got moved to a more secure network with APC Remote Reboot Port units it seemed the motherboard died.
Yesterday we already noticed it and thought it was due to the move but, today it was still down.
Due to fast support (within minutes), the motherboard and case were replaced and we are up and running again.
So we want to thank DedicatedNow technical staff for their incredibly fast response.
The Dragonfly CMS Team.
Server specs (Server OS / Apache / MySQL / PHP / DragonflyCMS):
Fedora 25 / Apache 2.4.27 / MariaDB 10.1.26 / PHP 7.1.10 / Mercurial