# smbclient //10.101.0.7/[share-file] -U [username]%[password] -c ls
WARNING: The "syslog" option is deprecated
NTLMSSP packet check failed due to short signature (0 bytes)!
NTLMSSP NTLM2 packet check failed due to invalid signature!
session setup failed: NT_STATUS_ACCESS_DENIED

smbclient -U$user%$password -L $mac_host --option="ntlmssp_client:force_old_spnego = yes"

sudo mount -t cifs //$mac_host/$share $mountpoint -o nounix,sec=ntlmssp,username=$user,password=$password