FTPES connect failing to zOS

[Nigel Pentland]

This used to work on earlier versions, but now when I try and connect using FTPES the following happens:

Status: Resolving address of xxxxx.xx.xxx.net
Status: Connecting to 10.x.x.x:21...
Status: Connection established, waiting for welcome message...
Response: 220-FTPD11 IBM FTP CS V1R8 at xxxxx.xx.xxx.net, 13:50:58 on 2008-10-20.
Response: 220 Connection will close if idle for more than 5 minutes.
Command: AUTH TLS
Response: 234 Security environment established - ready for negotiation
Status: Initializing TLS...
Status: Verifying certificate...
Command: USER xxxxxxx
Status: TLS/SSL connection established.
Response: 331 Send password please.
Command: PASS *
Response: 230 xxxxxx is logged on. Working directory is "xxxxxx.".
Command: SYST
Response: 215 MVS is the operating system of this server. FTP Server is running on z/OS.
Command: FEAT
Response: 211- Extensions supported
Response: AUTH TLS
Response: PBSZ
Response: PROT
Response: 211 End
Command: PBSZ 0
Response: 200 Protection buffer size accepted
Command: PROT P
Response: 200 Data connection protection set to private
Status: Connected
Status: Retrieving directory listing...
Command: CWD /xxx/xxxxxx/xxxxxxx/xxxx
Response: 250 HFS directory /xxx/xxxxxx/xxxxxxx/xxxx is the current working directory
Command: PWD
Response: 257 "/xxx/xxxxxx/xxxxxxx/xxxx" is the HFS working directory.
Command: TYPE I
Response: 200 Representation type is Image
Command: PASV
Response: 227 Entering Passive Mode (10,x,x,x,4,245)
Command: LIST
Response: 125 List started OK
Status: Server did not properly shut down TLS connection
Error: Could not read from transfer socket: ECONNABORTED - Connection aborted
Response: 250 List completed successfully.
Error: Failed to retrieve directory listing

[Tim Kosse]

Broken server that violates the TLS specifications.

You HAVE TO upgrade to a proper server.