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533 FTP Reply Code  -  KB Article #1544

Related Articles --

Example Reply
533 Command protection level denied for policy reasons.

Synopsis
A 533 reply 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 reply, which means the client is discouraged from sending the command again since the server will respond with the same reply code.

Possible Commands

See Also