Done. And as far as I can see, there are no problems. Only the integration of my SMIME certificate does not work. But that has nothing to do with the update, as it has never worked before.
I have been running the update for a few days now and have not noticed any issues so far. Mainly used to sync mail/calendar from phones and tablets and only little webmail.
Thanks for your efforts.
That is the consequence of EOL, the whole chain of dependencies and ecosystems of CentOS and thus NethServer6/7 has moved on and shifted focus. Fact of life, but we have been warned and notified “way ahead” or with time to prepare…