Somehow my email clients do receive emails, but they cannot send. It doesnt give any errors. It also says that the message has been send, but I dont receive anything. I checked the /var/log/mail/ dir and I only could find 3 files called: info,warnings,errors. But the last 2 where empty. So no errors I think. And the info file tells me the following: connect to mx4.hotmail.com[220.127.116.11]: No route to host (port 25) I have an server back home at the moment behind my router. And yes the firewall and the router ports are open. Any suggestions??