I did some searching on my ISP's website and it seems they block all requests and when I run nmap on my pc from one at school, it comes up with
PORT STATE SERVICE 25/tcp filtered smtp > > > >3. You can connect by name to port 25 from your mail server, but you get > > > "relaying denied". This should be fixed by the "mynetworks" line above. > > > - you should check that. > > Works now using mail.misilo in the alpine config, but mail still does > > not ever get out. > > But that's for network connectivity reasons. Postfix is now accepting mail > on all its interfaces though. > > > >4. You can't telnet to port 25 from remote windows machine. > > > - can you ping the server from the windows machine, by name and ip? > > pinging by name works and so does pinging by ip > > So DNS is okay and there's basic routing between the desktop and the mail > server. A firewall seems the most likely problem now. That could be on > either the server or the windows machine. > > > > - what is is inet_interfaces set to in /etc/postfix/main.cf > > inet_interfaces = all > > > > > - what is the output of "netstat --listening --tcp" > > tcp 0 0 *:smtp *:* LISTEN > > tcp 0 0 localhost:2207 *:* LISTEN > > Postfix is listening on all interfaces but packets are getting dropped or > blocked between your windows machine and your mail server on tcp port 25. > > On the server run: > > sudo tcpdump -i ethX port 25 > > changing ethX to be the interface you expect packets to arrive on (eth0 > most likely?). With the above running, redo the telnet on the windows > machine and you should see packets appearing on the tcpdump. If the > packets arrive to the server, there is some issue (most obviously a > firewall) on the server. If packets don't arrive, they're getting stopped > before they get to the server -- probably by a firewall on the client. Okay I ran this and tried connecting to it via telnet from the windows pc, but no packets appear. tried it about ten times hoping something would come up :) I also opened port 25 on the windows firewall and no luck, nor with turning it completely off. Also this is the output of iptables --list [EMAIL PROTECTED]:~# iptables --list Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination Tom -- edubuntu-users mailing list [email protected] Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
