Report here the timeline of incidents and interventions on off1 server. Keep things short or write a report.
We have an alert since 09-03 because /var/log/exim4/paniclog is not empty.
Indeed it has a line saying 2023-09-03 04:17:57 daemon: fork of queue-runner process failed: Cannot allocate memory
But appart from this it's all ok. Alert will remain until this paniclog is empty.
I did a:
cd /var/log/exim4; mv paniclog paniclog.1; systemctl reload exim4