From approximately 7pm tomorrow evening (Wednesday 18th October) we will be performing a cold reboot of the server, as we perform further work to fix ongoing issues with the Power Supply Units (PSUs).

This will impact all users of Zimbra mailboxes on this server as there will be up to 10 minutes of downtime.

We will endeavour to keep downtime to an absolute minimum, but the work is required to ensure that zimbra004 remains a robust performer going forward.

Any inbound mail will be queued and everything should return to normal, without intervention, following the reboot.