FTP:DELE not deleting directory in RHEL.

Hi,

I have a FTP which I am accessing from both RHEL 6.4 and Solaris 10.
Strange thing is happening when I am trying to delete a directory in both machines using

DELE

command, in Solaris operation is successful but RHEL 6.4 is throwing error:

550 Delete operation failed

The proper command to delete a directory is RMD . DELE is meant to delete files only (see RFC 959). It seems, the Solaris implementation is less strict in this regard.