I have OMV5 installed and a folder share for time machine, I also have the Avahi daemon installed and it shows my shares and the disk in the time machine, but when I try to setup the Time Machine to the share it gives me the following error
"The selected network backup disk does not support the required capabilities. Please choose a different network backup disk."
on the Avahi services the smb.service file looks like this
SMB Share pic
Captura de ecrã 2020-01-05, às 18.19.01.png