Hi joe! And thanks for all the effort to try to help me. I can start with my router/firewall, that is an linux router software called freesco(www.freesco.org) that i have set up because it was simple to run and dont needed hardisk or cd-rom.I have configured to portforward to my webbserver thats in on an DMZ and mailserver that is on the same network. Both have private ip adress configured, my webserver works fine, but not my e-mail server(exchange) My internet connection is a user class of service. I think that you may be right on that the provider are blocking inbound on their network.But if this is the case, can i bypass this problem some how without spending a lot of money? Or is it impossible? Wen i do the local teleneting on my local ip 192.168.x.x on port 25 i get this response: 220 ns02.domain.com (ISP Domain) Microsoft ESMTP MAIL Service, Version: 5.0.2195.2966 ready at Fri, 15 Nov 2002 00:25:07 +0100 Is this ok? Sow where do you think the problem might be? Hope you got some more info to go on... Thanks! /Morriz