If I try and set an ipv6 hostname on rsync backups, it says loading, and then the admin panel stops responding. After a little while, it goes to nginx’s 502 page, and then it looks like everything restarts itself and I can access the panel again. Is there a way to use IPv6 hostname with rysnc backups?
Not sure what went wrong, but you can start debugging by looking at the output of
sudo journalctl -u mailinabox