Our system uses RSSH this in combination with cygwin connecting to RedHat / CentOS systems with ssh gives the error: "insecure -e option not allowed" ; there is an easy workaround for this to force your rsync to use protocol 29 of rsync; add the following to your rsync line: --protocol=29
The error "insecure -e option not allowed" is given because of the RSSH security features which do not accept the new protocol used by rsync.
