My apologies if this has been covered in here or is otherwise obvious. I really tried to search the forums and don't see a good search tool for just the Tomato f/w posts. Testing for SMTP access, I get this: Code: ~$ telnet fictitious-smtp-server.com 25 Trying 18.104.22.168... telnet: Unable to connect to remote host: No route to host Just to see if the server isn't reachable, I tried this: Code: ~$ telnet fictitious-smtp-server.com 80 Trying 22.214.171.124... Connected to iveylaw.com. Escape character is '^]'. Connection closed by foreign host. So, it seems to be specific to port 25. My laptop has no SMTP troubles outside of my LAN and only the Tomato stands between my laptop and the DSL modem. I have extensive QoS set up and have tried to make explicit rules for port 25 to remove any QoS problems I may have caused. Tomato: 1.17 (yes, I know, time to upgrade). Any ideas where I can look for things that would block port 25 on the Tomato? Any help is greatly appreciated. Regards.