On Thu, 12 Jun 2008, Lukasz Szybalski wrote:

>> STOR test1.txt
> < 553 Invalid destination System[ ] Acct[*] Userid[*] Class[*].
> * Failed FTP upload: 553

This shows the connection, the SSL, the certificates all seemed to work fine
but the server wants something more and denies the STOR command. I suggest you
simply ask the server admins for more details on this.

-- 
  / daniel.haxx.se