title: I'm getting "500 : Command not understood" in Windows server IIS
body: <p>I'm getting "500 : Command not understood" in IIS when I try to copy and paste a file to a folder in a ftp server, using a particular ftp username. Getting the same error while used filezilla to upload a file to the folder.</p>
  
  <p>We also tried giving read, write, modify rights to that ftp user, no use.</p>
  
  <p>If anybody need any details about the server to get a clear idea, I'll provide.</p>