ftp to a windows machine from SCO unix

I have done things many times before but this time I am stuck.  I am trying to ftp a file from a SCO Unix 5.0.7 system to a windows machine.  I get the following error:


# ftp -d secure.mpp.com
Connected to secure.mpp.com.
220 Microsoft FTP Service
---> AUTH KERBEROS_V5
504 Security mechanism not implemented.
Kerberos V5: rejected as an authentication type
Name (secure.mpp.com:root): mpp\vdr-tstvdr
---> USER mpp\vdr-tstvdr
331 Password required for mpp\vdr-tstvdr.
Password:
---> PASS XXXX
530 User cannot log in, home directory inaccessible.
Login failed.
---> SYST
215 Windows_NT
Remote system type is Windows_NT.
---> TYPE A
200 Type set to A.
Using ascii mode to transfer files.
ftp>


It happens whether I use the machine name or the ip address.