Rebooting the server is sometimes buggy.
- First off, make sure you have the passphrase, and log into the proxmox interface (=the console).
- ssh into skwotmail, make sure noone else is connected (
w), check the open tmux or screen windows, then issuereboot. - The console might not reconnect successfully, it might also display a black screen or anything that doesn't help at all. If so, you can "reset" the VM by clicking the down arrow next to the "shutdown" button, and click "Reset".
- Enter passphrase on the console when asked, or use dropbear
- After successful reboot, log into the machine and check if zimbra has started
properly (every line must show "running"):
# su - zimbrazimbra$ zmcontrol status