Tim,
    I've had comm issues multiple times in the past with GXS.  It may be 
related or not, but is a known issue with GXS .  It basically boils down 
to this.  One of their systems I forget which is on a mainframe and 
their implementation of TCP/IP isn't totally compliant.  FTP sessions 
have two connections a data and control port.   GXS purges mailboxes on 
Sundays.  On a high volume mailbox basically when you do a list or 
retrive command on a mailbox with alot of contents say on a friday or 
saturday it takes the mainframe intermittently more than a minute 
threshold to respond and TCP/IP timeouts.   One minute is the threshhold 
set for the RFC.  There are a couple of workarounds one of which was to 
put less volume through the mailbox :).   Another is to move your 
mailbox to one of their ASCII systems, but you will have delimiter 
issues to contend with for a while.

Regards,
-Steve

Timothy Cronin wrote:

> 
>Hi,
> 
>We have been having issues communicating with the GXS Secure FTP site. They 
>seem to have started mid last month.  The problem we are having is that we 
>periodically get disconnected during receive sessions. We can reconnect and 
>continue the session successfully.
> 
>The disconnect can happen right after issues a dir or a get command.    
> 
>The error we get is "425 Can't open data connection."
> 
>We are not having this problem with any other ftp connections.  Is anyone else 
>encountering similiar problems?
> 
>Tim Cronin
> 
>  
>
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