Using a different FTP server for the below, but here are the log entries:
STATUS> Connecting to "192.168.99.66" on port 21.
STATUS> Connected to 192.168.99.66:21 from 192.168.10.233:49590.
220 Serv-U FTP Server v8.0 ready...
COMMAND> HOST 192.168.99.66
500 'HOST': command not understood.
STATUS> Connected. Logging in to the server.
COMMAND> USER ltapper
331 User name okay, need password.
COMMAND> PASS ***
230 User logged in, proceed.
STATUS> Login successful.
COMMAND> SYST
215 UNIX Type: L8
COMMAND> FEAT
211-Extensions supported
UTF8
OPTS MODE;MLST;UTF8
CLNT
CSID Name; Version;
SITE PSWD;SET;ZONE;CHMOD;MSG;EXEC;HELP
AUTH TLS;SSL;TLS-C;TLS-P;
PBSZ
PROT
CCC
SSCN
RMDA directoryname
DSIZ
AVBL
MODE Z
THMB BMP|JPEG|GIF|TIFF|PNG max_width max_height pathname
REST STREAM
SIZE
MDTM
MDTM YYYYMMDDHHMMSS[+-TZ];filename
MFMT
MFCT
MFF Create;Modify;
XCRC filename;start;end
MLST Type*;Size*;Create;Modify*;Perm;Win32.ea;Win32.dt;Win32.dl
211 End (for details use "HELP commmand" where command is the command of interest)
STATUS> Server supports resume.
COMMAND> CSID Name=FTP Voyager; Version=16.1.0.0;
200 Name=Serv-U; Version=8.0.0.2; OS=Windows 2000; OSVer=5.0.2195; CaseSensitive=0;
COMMAND> OPTS UTF8 ON
200 OPTS UTF8 is set to ON.
COMMAND> SITE ZONE
210 UTC-240
COMMAND> OPTS MLST Type;Size;Modify;Create;Perm;win32.ea;win32.dt;win32.dl;
200 MLST OPTS Type;Size;Modify;Create;Perm;Win32.ea;Win32.dt;Win32.dl;
COMMAND> PWD
257 "/D:/pdfftp" is current directory.
COMMAND> OPTS MODE Z LEVEL 6
200 MODE Z LEVEL set to 6.
COMMAND> MODE Z
200 MODE Z ok.
COMMAND> PASV
227 Entering Passive Mode (192,168,99,66,10,85)
STATUS> Opening passive mode data connection to 192.168.99.66, port 2645.
COMMAND> MLSD
150 Opening BINARY mode data connection for MLSD.
226 Transfer complete. 3,466 bytes (952 compressed to 27.47%) transferred. 61.98 actual KB/sec, 225.65 effective KB/sec.
STATUS> Transferred 3,466 bytes (952 compressed to 27.47%). 4.58 actual KB/sec, 16.67 effective KB/sec.