Other users of a Samba-provided network share (from an Amazon Linux machine) can connect fine (Ubuntu 18.04 LTS, Windows 10, Windows 7).
Mac users are prompted for a password, and then the connection hangs. The GUI just displays "connecting" and the 'mount -t smb ...' command in Terminal displays no further output after prompting.
Windows 7 in a Virtual Machine (modern.ie, VirtualBox) on the same Mac can access fine.
Any ideas what could be up ? Or where to look for more logs ?