title: When I upload config file by curl tool it fails with curl: (25) Failed FTP upload: 550
body: <p>I have a step in my TFS release where I need to upload a config file.
  I use curl to do that but I can not make to work it. curl always fails with the error curl: (25) Failed FTP upload: 550. I check credentials and they are correct. What else can cause this issue ?</p>