Engin qwert: > root@xn--hadibakalm-5ub:~# telnet 168.100.189.2 25Trying > 168.100.189.2...telnet: Unable to connect to remote host: No route to host
Then your ISP is blocking your outbound SMTP connections. I was able to connect to your server's SMTP port from 168.100.189.2 (you should see that in your maillog file). Wietse