550: closing control connection
Explanation
An error occurred while the client was logged in to FTP, or while the client was attempting to log in to FTP.
System action
The client's FTP session ends. FTP continues.
User response
Contact the system programmer with the error message.
System programmer response
Error messages related to the user's FTP session are written to syslogd if ftp server traces are enabled. If syslogd is not active, the error messages will be written to the operator console. Correct any errors found, and instruct the user to log in to FTP again.