I created a schedule to download a directory from a server to my local machine.
When it runs I see the following log data (edited out personal Data x's and y's are swapped from my IP Addresses)
03] Wed 08Oct14 13:12:49 - Retrying Connection (attempt 8)...
[03] Wed 08Oct14 13:12:49 - Connecting to "xxx.xx.xxx.xx" on port 21 through proxy "xxx.xx.xxx.xx" on port 21.
[03] Wed 08Oct14 13:12:49 - Connecting to "xxx.xx.xxx.xx" on port 21.
[03] Wed 08Oct14 13:12:49 - Connected to xxx.xx.xxx.xx from yy.yy.yy.yyy
[06] Wed 08Oct14 13:12:49 - 220 Multicraft 1.8.2 FTP server
[05] Wed 08Oct14 13:12:49 - USER username
[06] Wed 08Oct14 13:12:49 - 331 Username ok, send password.
[05] Wed 08Oct14 13:12:49 - PASS ****
[06] Wed 08Oct14 13:12:49 - 230 Login successful
[05] Wed 08Oct14 13:12:49 - OPEN xxx.xx.xxx.xx
[06] Wed 08Oct14 13:12:49 - 500 Command "OPEN" not understood.
[04] Wed 08Oct14 13:12:49 - Unable to log in via the FTP proxy.
[04] Wed 08Oct14 13:12:49 - Unable to login.
[04] Wed 08Oct14 13:12:49 - Connection attempt failed. Retrying in 3 seconds...