VPN IPs can't connect to smb

Hallo,
I can’t connect from my external Clients over VPN to my Univention SMB Server.
OpenVPN → OPNSense → Univention 5.0-2
Local clients work perfect.
I can access the Univention Portal and ssh to the Server over VPN.
Only over VPN to the Server I get “Der Netzwerkpfad wurde nicht gefunden”
Any ideas?
Thx
C

Hi
did you try it with the IP or with the FQDN?

Best Ben