Hi,
I've set up an Debian 10 container, installed cifs-utils and trying to mount a Samba share (from Synology NAS), which fails:
mount --verbose -t cifs -o user=myuser,domain=mydomain,vers=3.0 //nas1.mydomain.local/Share /mnt/Share
Password for myuser@//nas1.mydomain.local/Share: ***
mount.cifs...