by jamesc » Jun 24 06 12:55 am
A few things you could try.
1. Disable the Windows Firewall in the Windows Services for the sake of testing on the FTP Server.
2. Check in your Port Redirection whether you have selected "Don't Translate Source IP" for the TCP Port 21 rule.
3. You might have one network card pointing towards the LAN, and another network card/modem pointing towards the internet; if you do not need a default gateway on your internal network card, then make sure there is none.
4. Confirm from a 2nd Internet Client that the upload fails.