~$ smbclient -U myname%mypass -W mydomain -L //remote.address.com
Domain=[MYDOMAIN] OS=[Windows Server 2003 3790 Service Pack 2] Server=[Windows Server 2003 5.2]

        Sharename       Type      Comment
        ---------       ----      -------
        Sharename       Disk
        C$              Disk      Default share
        D$              Disk      Default share

        ...etc.

Domain=[PHARMACOLOGY] OS=[Windows Server 2003 3790 Service Pack 2] Server=[Windows Server 2003 5.2]

~$ smbclient -U myname%mypass -W mydomain -L //remote.address.com/Sharename
Domain=[MYDOMAIN] OS=[Windows Server 2003 3790 Service Pack 2] Server=[Windows Server 2003 5.2]
tree connect failed: NT_STATUS_OBJECT_PATH_NOT_FOUND

~$ sudo mount -v -t cifs //remote.address.com/Sharename /tmp/tmpmount -o username=myname,domain=mydomain,pass=mypass
mount.cifs kernel mount options: ip=163.1.10.2,unc=\remote.address.comSharename,user=myname,,domain=mydomain,pass=********
mount error(20): Not a directory
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)