FTP 425 Error Code

Hi List

I am currently supporting some software that runs on the System i that
retrieves data from
an FTP server for processing. The basic process connects to the FTP
server and obtains a
directory listing and then a suite of RPG programs generates scripts
that retrieve and
rename data files from the FTP server and is all fairly straight
forward.

The problem is that occasionally the FTP log shows a "425 Can't build
data connection'
error followed by a second message of "425 duplicate name". I'm a
little confused by this
because the "get" statement in the script uses the "(replace" parameter
which I would
expect to cater for any duplicates. Apart from this, the files are all
retrieved into
QTEMP and are given a unique number in the script.

On the FTP server side the directory listing shows the file name as
being unique. The
following extract of the FTP log shows the relevant part of the
directory listing:

.00 0Output redirected to a file.
.00 0Input read from specified override file.
.00 0Connecting to remote host xxx.xxx.xxx.xxx using port 21.
.00 0220 ftp.domain.com FTP Server (Version 5.4) Ready.
.00 0Enter login ID (userid):
.00 0331 Username USERID requires a Password
.00 0230 User logged in.
.00 0VMS OpenVMS V7.3 on node ftp.domain.com.
.00 0Enter an FTP subcommand.
.00 0>
.00 0Enter an FTP subcommand.
.00 0> dir DATA345*.DAT*
.00 0200 PORT command successful.
.00 0150 Opening data connection for DATA345*.DAT*
(172.17.236.55,31921)
.00 0Directory DISK$WHOLESALE3:[DATA]
...
.00 0DATA345239.DAT;2538
.00 0 33/64 31-OCT-2007
03:03:23 [DATA,USERID] (RWED,RWED,RE,)
.00 0DATA345239.DAT;2537
.00 0 25/64 31-OCT-2007
00:32:36 [DATA,USERID] (RWED,RWED,RE,)
.00 0DATA345239.DAT;2536
.00 0 27/64 30-OCT-2007
21:30:11 [DATA,USERID] (RWED,RWED,RE,)
.00 0DATA345239.DAT;2535
.00 0 29/64 30-OCT-2007
17:32:40 [DATA,USERID] (RWED,RWED,RE,)
.00 0DATA345239.DAT;2534
.00 0 28/64 30-OCT-2007
13:10:14 [DATA,USERID] (RWED,RWED,RE,)
.00 0DATA345239.DAT;2533
.00 0 4/64 30-OCT-2007
09:41:13 [DATA,USERID] (RWED,RWED,RE,)
...
.00 0Total of 772 files, 93446/127552 blocks
.00 0226 LIST Directory transfer complete.
.00 0Enter an FTP subcommand.
.00 0>
.00 0Enter an FTP subcommand.
.00 0>
.00 0Enter an FTP subcommand.
.00 0>
.00 0Enter an FTP subcommand.
.00 0>
.00 0Enter an FTP subcommand.
.00 0> QUIT
.00 0221 Goodbye.

While the extract of the error shows:

.00 0Output redirected to a file.
.00 0Input read from specified override file.
.00 0Connecting to remote host xxx.xxx.xxx.xxx using port 21.
.00 0220 ftp.domain.com FTP Server (Version 5.4) Ready.
.00 0Enter login ID (userid):
.00 0331 Username USERID requires a Password
.00 0230 User logged in.
.00 0VMS OpenVMS V7.3 on node ftp.domain.com.
.00 0Enter an FTP subcommand.
.00 0>
.00 0Enter an FTP subcommand.
.00 0> get 'DATA345239.DAT;2535' QTEMP/DT10422679.CDRREC
(replace
.00 0200 PORT command successful.
.00 0425-Can't build data connection for 192.168.0.1,21066
.00 0425 duplicate name
.00 0Enter an FTP subcommand.
.00 0> renam 'DATA345239.DAT;2535' 'DATA345239.SAV;2535'
.00 0350 File DISK$WHOLESALE3:[DATA]DATA345239.DAT;2535 will
be renamed.
.00 0250 File DISK$WHOLESALE3:[DATA]DATA345239.DAT;2535
renamed to DISK$WHOLESALE3:[DATA]DATA345239.SAV;2535
.00 0Enter an FTP subcommand.
.00 0>
.00 0Enter an FTP subcommand.
.00 0>
.00 0Enter an FTP subcommand.
.00 0>
.00 0Enter an FTP subcommand.
.00 0> QUIT
.00 0221 Goodbye.


Any ideas would be gratefully received.

Thanks in advance

Jonathan


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