503 : Server on the TLS secure port does not accept the AUTH command

Explanation

The FTP client program connected to an FTP server that is running on the TLS secure port 990. The FTP server assumes that all connections are protected by the TLS security mechanism and that an AUTH command is not needed to initiate a TLS handshake.

System action

FTP continues.

User response

Close the connection to the FTP server and reconnect without sending an AUTH command.

System programmer response

None.