FTP through MS IE

We have recently went behind a firewall which meant our web access was totally 
reliant 
on the proxy. FTP did not seem to the work at all with the old version of squid 
we were 
using so I've just upgraded to the latest version (2.5 stable1). This seems to 
improve 
the situation but some FTP sites do not work through the squid proxy but works 
through 
our IPlanet/Netscape proxy which we are trying to get rid of as it is so buggy. 
One site 
as an example is the finland download site for samba linked to from 
www.samba.org 
the address is ftp://fi.samba.org/pub/samba/ 
Under squid this site gives a ftp protocol error while the Germany and Italy 
links from 
the same page work fine. Here is a cut&paste of the error page:

ERROR
The requested URL could not be retrieved

--------------------------------------------------------------------------------

An FTP protocol error occurred while trying to retrieve the URL: 
ftp://fi.samba.org/pub/samba/ 

Squid sent the following FTP command: 

NLST

and then received this reply 

Use PORT or PASV first.

--------------------------------------------------------------------------------

Generated Fri, 28 Mar 2003 12:22:25 GMT by www.comp.rgu.ac.uk 
(squid/2.5.STABLE1-20030303) 

Again this site loads ok if I use the other proxy.

Also is the mailing list stored in a searchable archive as this would be really 
usefull 
source for troubleshooting and would supply a lot more info thatn just the FAQ 
pages.

Thanks in advance


David Flood
Systems Administrator