Dapper Answers The 192.168.2.1 is the IP address of my router/firewall. I am trying to get this running on my old laptop that has a wireless connection to the router/firewall. The ifconfig gave this... root@server1:~# ifconfig lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:27 errors:0 dropped:0 overruns:0 frame:0 TX packets:27 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:1571 (1.5 KiB) TX bytes:1571 (1.5 KiB) wlan0 Link encap:Ethernet HWaddr 00:90:47:06:2E:94 inet addr:192.168.2.6 Bcast:192.168.2.255 Mask:255.255.255.0 inet6 addr: fe80::290:47ff:fe06:2e94/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:484 errors:2 dropped:0 overruns:0 frame:0 TX packets:294 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:216554 (211.4 KiB) TX bytes:43409 (42.3 KiB) Interrupt:9 Base address:0x1800 I, also, tried the postconf -e 'smtp_host_lookup=native' command. Restarted postfix and there was no change. I still get this... root@server1:~# telnet localhost 25 Trying 127.0.0.1... Connected to localhost.localdomain. Escape character is '^]'. ^] telnet> I have been reading all over the place trying to learn this stuff but it seems like such an uphill climb. I did not install Ubuntu as a server but used the alt install with the gui. Does that make a difference? Thanks for all your help.