Hi,
My understanding is that you've installed hardware/mailserver but that the webmail element (rainloop) stopped working after a server reboot. Did I understand the scope of the problem correctly?
It sounds like something that should be fixable within a couple of hours.
I have a few questions:
1) You write via anydesk or teamviewer - is that to test the webmail access or is it also a limit for accessing the server (presumably via SSH)?
2) How did you originally set up the stack to run inside docker, and restart individual services as needed? Via docker-compose, normal docker, kubernetes, nomad, something else?
I look forward to working with you!
--Issac