Hello Réne
And welcome to the NethServer community!
As you can see from my TAG (Top left of any poster…) I support about 25-30 clients - almost all running NethServer as a VM on Proxmox. All use NethServer as primary server, with AD, Mail, Files, Print, NextCloud, Zabbix Monitoring and a few more…
I’d say NethServer would fit almost all your requirements - besides having one of the best forums for Open Source stuff to help you…
Our motto is: The only stupid questions are the ones not asked!
Using NethServer and the included Modules, I’d suggest:
NethServer as Basis
Nextcloud for:
- Synching files with Workstation(s)
- Calendering
- Adressbook
- Note (Evernote?)
- and very many other!
Mail, at least with IMAPsync as a backup of what you have at your ISP
VPN (OpenVPN for Roadwarrior access).
If you want it really easy, NethServer has partnered with Digital Ocean and they offer a “ready to run” NethServer VPS…
Hope these answer your first questions…
My 2 cents
Andy
PS: Any chance you’re also from Switzerland?