CFFTP error 425 can't build data connection

[Tea man]

I'm trying to have my script connect to an offsite FTP server using CFFTP tag.

So far every CFFTP tag I use appears to fail with the possible exception of the action="open".

The error I get is 425: Can't build data connection: No route to host.

I can ftp using a telnet session from the same server just fine.  This is with CF8 on a Sun workstation as server (Unix).

I have tried with and without a proxy server.

I have tried with passive mode = yes and no.  When no the error occurs quickly.  When yes it takes about 30 seconds or more to tell me the same error.

I have tried action = listdir and existfile and no success. I have verified the directory specified on the remote server is valid.

I have made sure the Enable ColdFusion Security checkbox is checked. I have no idea if anything needs to be done with the sandbox stuff in the lower part of that form.

I'm totally stumped here. My code is this:

<cfftp connection="Myftp"
    action="Open"
    server="xxxxx"
    username="anonymous"
    password="xxxxx"
    passive="yes"
    stoponerror="Yes">

<cfftp connection=Myftp
    action="GetCurrentDir"
    stoponerror="Yes">

<!--- Get the current directory name --->
<cfftp connection="Myftp"
    action="listdir"
    directory="#cfftp.returnvalue#"
    name="dirlist"
    stoponerror="Yes">

It fails on the last line above.  What should I try?

What other common roadblocks can cause this?

[mack_]

Did the FTP server recently changed IP addresses ? (I ask because Java

caches IP addresses for a long time by default)

Do you have the possibility to check the actual trafic ? (with tcpdump

for example)

Also, telnet will not show the whole picture (it makes sure that the

initial connection to port 21 works but not that the subsequent

connections work - ftp is a protocol that uses 2 connections: one for

command and one for actual data transfer). Check with command line ftp

to make sure that it works.

Mack

[Tea man]

mack, the FTP cerser did not change IP addresses. Don't know how to use tcpdump to check the traffic.

command line in telnet for listing a directory works fine.

This appears to be a CF8 issue.  I can't get anyone to indicate that they can do directory listings with CFFTP on a remote server.  I'd like to confirm this is an issue with my provider (FTP Today) versus a CF8 issue with this tag.

[mack_]

I've used CFFTP to list directory contents in the past and it worked

so I think the problem might be specific to your setup. My bet would

be on a passive vs active issue (a firewall rule that blocks the

incoming request for the active mode).

Mack