This was working well until a couple of days ago. I can't recall having done anything to the server leading it to start closing the connection. Also I have no idea what exitcode 128 means, and can't find anything about it. Here's FileZilla's response to the connection attempt
Status: Connecting to foo.bar.no... Response: fzSftp started Command: open "email@example.com" 22 Command: Pass: ******* Status: Connected to foo.bar.no Error: Connection closed by server with exitcode 128 Error: Could not connect to server
Trying to connect with WinSCP also tells me the server closed the connection with error code 128 and additionally tells me:
Cannot initialize SFTP protocol. Is the host running a SFTP server?
I can SSH connect to the server no problem using PuTTY. Any ideas?