mail.google.com is currently unreachable.

Instead, though, telnet to your public IP, port 25. To further test and validate this, you can set up a port forward in your router for port 25 to your current PC and then attempt the same netcat trick.

If the things you type are reflected in netcat, then it's again possible that it's a restriction on your ISP.

Then in a new terminal, try a telnet connection to localhost:25. If that works, it's probably an ISP restriction.Īs a test, you can play around with netcat a bit: sudo nc -l -p 25 Have a look at your ISP's website specifically regarding port 25.įirst try connecting to your ISP's email servers if available using port 25. For other email services, an alternate port has to be used which may necessitate the use of SSL or TLS rather than an open connection like port 25 gives you. My ISP (Cox) does this, only allowing connections to their own mail servers on port 25. Many ISPs will block connections to port 25 as an anti-spam measure. output: `10 packets transmitted, 5 received, 50% packet loss, time 13448ms`Ĭould you try **telnet 465**? **** and **** resolve to different IP addresses so you should try to ping as you are telnetting this host on port 25. Output had line: `10 packets transmitted, 9 received, 10% packet loss, time 9990ms` Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name

UPDATE: sudo netstat -tunlp gives: Active Internet connections (only servers) I even tried to use my mobile network instead of lan thinking my ISP may have blocked ports but I got the same error. I used this to configure my firewall using method 2 thinking this problem may be because of it. Telnet: Unable to connect to remote host: Network is unreachable I am not able to connect to gmail with telnet using any of the ports.Īnd it gives following error: Trying 74.125.68.108.

Mail.google.com is currently unreachable.