Here is the Smartfp log:
[13:21:06] SmartFTP v2.0.996.1
[13:21:07] Resolving host name "123.45.67.890"
[13:21:07] Connecting to 123.45.67.890 Port: 21
[13:21:07] Connected to 123.45.67.890.
[13:21:07] 220 Serv-U FTP Server v6.0 for WinSock ready...
[13:21:07] AUTH TLS
[13:21:07] 234 AUTH command OK. Initializing SSL connection.
[13:21:07] Connected. Exchanging encryption keys...
[13:21:07] Session Cipher: 128 bit RC4
[13:21:07] TLS encrypted session established.
[13:21:07] PBSZ 0
[13:21:08] 200 PBSZ command OK. Protection buffer size set to 0.
[13:21:08] USER admin
[13:21:08] 331 User name okay, need password.
[13:21:08] PASS (hidden)
ServerWelcome Message was here:
[13:21:09] 230 User logged in, proceed.
[13:21:09] SYST
[13:21:09] 215 UNIX Type: L8
[13:21:09] FEAT
[13:21:10] 211-Extension supported
[13:21:10] AUTH TLS
[13:21:10] SSCN
[13:21:10] PBSZ
[13:21:10] PROT
[13:21:10] CCC
[13:21:10] CLNT
[13:21:10] MDTM
[13:21:10] MDTM YYYYMMDDHHMMSS[+-TZ];filename
[13:21:10] SIZE
[13:21:10] SITE PSWD;EXEC;SET;INDEX;ZONE;CHMOD;MSG
[13:21:10] REST STREAM
[13:21:10] XCRC filename;start;end
[13:21:10] MODE Z
[13:21:10] 211 End
[13:21:10] Detected Server Software: Serv-U 5.x/6.x
[13:21:10] CLNT SmartFTP 2.0.996
[13:21:10] 200 Noted.
[13:21:10] PWD
[13:21:10] 257 "/c:" is current directory.
[13:21:10] TYPE A
[13:21:12] 200 Type set to A.
[13:21:12] MODE Z
[13:21:13] 200 MODE Z ok.
[13:21:13] PROT P
[13:21:13] 200 PROT command OK. Using private data connection.
[13:21:13] Connecting to IP Repeater "http://repeater.smartftp.com:443/" ...
[13:21:13] IP Repeater returned: "123.45.67.890"
[13:21:13] PORT 123.45.67.890,195,133
[13:21:13] 200 PORT Command successful.
[13:21:13] LIST -aLT
[13:21:13] 150 Opening ASCII mode data connection for /bin/ls.
[13:21:13] 426 Data connection closed, transfer aborted.
[13:22:04] NOOP
[13:22:05] 200 Command okay.
[13:22:09] PORT 123.45.67.890,195,134
[13:22:09] 200 PORT Command successful.
[13:22:09] LIST -aLT
[13:22:09] 150 Opening ASCII mode data connection for /bin/ls.
[13:22:09] Connected. Exchanging encryption keys...
[13:22:10] Session Cipher: 128 bit RC4
[13:22:10] TLS encrypted session established.
[13:22:10] 494 bytes transferred. (1,11 KB/s) (431 ms)
[13:22:10] 226 Transfer complete.
[13:22:15] CWD /c:/directory
[13:22:15] 250-Clients:[1]-Up:[0.0 KB/s]-Dn:[0.0 KB/s]-Space:[12.83 GB]
[13:22:15] 250 Directory changed to /c:/directory
[13:22:15] PWD
[13:22:15] 257 "/c:/directory" is current directory.
[13:22:15] PORT 123.45.67.890,195,135
[13:22:16] 200 PORT Command successful.
[13:22:16] LIST -aLT
[13:22:16] 150 Opening ASCII mode data connection for /bin/ls.
[13:22:16] Connected. Exchanging encryption keys...
[13:22:16] Session Cipher: 128 bit RC4
[13:22:16] TLS encrypted session established.
[13:22:16] 230 bytes transferred. (848 bytes/s) (271 ms)
[13:22:16] 226 Transfer complete.
[13:22:22] CWD /c:/directory
[13:22:22] 250-Clients:[1]-Up:[0.0 KB/s]-Dn:[0.0 KB/s]-Space:[12.83 GB]
[13:22:22] 250 Directory changed to /c:/somedirectory
[13:22:22] PWD
[13:22:22] 257 "/c:/ some directory " is current directory.
[13:22:22] PORT 123.45.67.890,195,136
[13:22:22] 200 PORT Command successful.
[13:22:22] LIST -aLT
[13:22:22] 150 Opening ASCII mode data connection for /bin/ls.
[13:22:23] Connected. Exchanging encryption keys...
[13:22:23] Session Cipher: 128 bit RC4
[13:22:23] TLS encrypted session established.
[13:22:23] 378 bytes transferred. (1,41 KB/s) (261 ms)
[13:22:23] 226 Transfer complete.
[13:22:26] CWD /c:/ some directory
[13:22:26] 250-Clients:[1]-Up:[0.0 KB/s]-Dn:[0.0 KB/s]-Space:[12.83 GB]
[13:22:26] 250 Directory changed to /c:/ some directory [13:22:26] PWD
[13:22:26] 257 "/c:/ some directory " is current directory.
[13:22:26] PORT 123.45.67.890,195,137
[13:22:26] 200 PORT Command successful.
[13:22:26] LIST -aLT
[13:22:27] 150 Opening ASCII mode data connection for /bin/ls.
[13:22:27] Connected. Exchanging encryption keys...
[13:22:28] Session Cipher: 128 bit RC4
[13:22:28] TLS encrypted session established.
[13:22:28] 1257 bytes transferred. (1,85 KB/s) (661 ms)
[13:22:28] 226 Transfer complete.
[13:23:17] CWD /c:/ somedirectory
[13:23:18] 250-Clients:[1]-Up:[0.0 KB/s]-Dn:[0.0 KB/s]-Space:[12.83 GB]
[13:23:18] 250 Directory changed to /c:/Mydirectory
[13:23:18] PWD
[13:23:18] 257 "/c:/Mydirectory" is current directory.
[13:23:18] PORT 123.45.67.890,195,138
[13:23:18] 200 PORT Command successful.
[13:23:18] LIST -aLT
[13:23:18] 150 Opening ASCII mode data connection for /bin/ls.
[13:23:18] Connected. Exchanging encryption keys...
[13:23:19] Session Cipher: 128 bit RC4
[13:23:19] TLS encrypted session established.
[13:23:19] 132 bytes transferred. (505 bytes/s) (261 ms)
[13:23:19] 226 Transfer complete.
[13:23:22] CWD Mydirectory
[13:23:22] 250-Clients:[1]-Up:[0.0 KB/s]-Dn:[0.0 KB/s]-Space:[12.83 GB]
[13:23:22] 250 Directory changed to Mydirectory
[13:23:22] PWD
[13:23:22] 257 Mydirectory" is current directory.
[13:23:22] PORT 123.45.67.890,195,139
[13:23:23] 200 PORT Command successful.
[13:23:23] LIST -aLT
[13:23:23] 150 Opening ASCII mode data connection for /bin/ls.
[13:23:23] Connected. Exchanging encryption keys...
[13:23:23] Session Cipher: 128 bit RC4
[13:23:23] TLS encrypted session established.
[13:23:23] 473 bytes transferred. (983 bytes/s) (481 ms)
[13:23:23] 226 Transfer complete.
[13:24:14] NOOP
[13:24:14] 200 Command okay.
[13:25:05] NOOP
[13:25:05] 200 Command okay.
[13:25:55] NOOP
[13:25:55] 200 Command okay.
[13:26:46] NOOP