I am trying to backup my home directories onto my ftp server, but I get this error when the backup runs...

tar: unrecognized option `--rsh-command=/usr/local/etc/webmin/fsdump/ftp.pl'
Usage:
  List:    tar -tf <archive-filename>
  Extract: tar -xf <archive-filename>
  Create:  tar -cf <archive-filename> [filenames...]
  Help:    tar --help
.. backup failed!

Any help?