Due to the 'Meltdown' and 'Spectre' vulnerabilities (https://meltdownattack.com/) We will be performing various server upgrades and reboots this evening and over the weekend.
The most noticeable of these will be IMAP/POP3 email servers. These will be updated this evening from 10PM. We expect IMAP and POP3 services to be disrupted for up to 30 minutes whilst this work is carried out.
This work has completed successfully.