I am thinking of selecting earlier version when booting smeserver. It boots with a menu where i can select earlier version. "Not proxmox snapshot"
That's an earlier kernel version.
Won't change the data.
Yesterday i updated my sme box because of the domain login
That won't affect your domain logon issue as it is a Windows update that caused it, not a SME update.
You can test with a Windows pc without a domain logon.
There is no fix for SME currently. We are waiting for upstream. The only solution is in the other thread - remove the updates.
Now i can't connect to my server. Seems like mail. Httpd ssh ect. Is down.
I not sure those services would be affected by the domain issue?
First test with a pc without a domain logon.
Then have a look in your server logs for errors.
https://wiki.koozali.org/How_to_report_a_problem#History