The mail, web and DNS server has received new disks. The old 5400RPM 320Gbytes HDDs have been replaced by 1Tb SSD disks. This will allow to use larger quotas on the mail-server side, and will be specially faster for all requests that are ran on the server.

The day after the OS has been upgraded from Ubuntu 14.04 LTS to Ubuntu 18.04 LTS getting through Ubuntu LTS 16.04 LTS.
The main issues have been the passage from upstart to systemd, where some applications (mysql)_ could not b...