Unless you deleted docker storage (or used cloudron-support --recreate-docker and for some reason that was incomplete), I am not sure why the docker network will go missing . I think best to check again here if it happens again in a few days, but it's quite unlikely .
Ok, I understand that. The case which you're saying is different. If anyhow the user doesn't have access to the Admin and just the user account is compromised then he can send emails from that account only and if admin has setup limits over that then the spammer can't go beyond the limits.
Limits should be setup in any case and should be controlled by Admin.
This is a very important and good feature that needs to be implemented.
I hope you understand.
Thanks!
@flaxxain not sure why/how, but docker was corrupt. The box code was unable to reach the containers (like postgresql) via http . Solution was to run cloudron-support --recreate-docker which re-creates docker from scratch (without destroying any data).