Tools

533 FTP response code

A 533 response code may be sent in response to a command requesting a change in the command channel protection level that cannot be processed due to the security policy in place on the server. It is a permanent negative response, which means the client is discouraged from sending the command again since the server will respond with the same response code.

First published date

10/25/2018 7:56 PM

Last published date

10/25/2018 7:56 PM

Overview

This article provides information on 533 FTP response code.

Product section

Serv-U Managed File Transfer & Serv-U FTP Server

Resolution

A 533 response code may be sent in response to a command requesting a change in the command channel protection level that cannot be processed due to the security policy in place on the server. It is a permanent negative response, which means the client is discouraged from sending the command again since the server will respond with the same response code.

Example response 

533 Command protection level denied for policy reasons.

Possible commands