Tools
551 FTP response code
A 551 response code may be sent in response to any command requiring the server to store information locally. 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 response code.
First published date
10/25/2018 8:02 PM
Last published date
10/25/2018 8:02 PM
Overview
This article provides information on 551 FTP response code.
Product section
Serv-U Managed File Transfer & Serv-U FTP Server
Resolution
A 551 response code may be sent in response to any command requiring the server to store information locally. 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 response code. It is only applicable when the page file structure is being used (through a STRU P command).
Example response
551 Requested action aborted: page type unknown.