-A INPUT -m state --state NEW -m tcp -p tcp --dport 25 -j ACCEPT firewall is ok
2014-02-21 10:37 GMT+08:00 Venkat <mvenkat...@gmail.com>: > On Thu, Feb 20, 2014 at 6:31 PM, Feel Zhou <feelz...@gmail.com> wrote: > >> Hello, My friend >> This is Tom, I'm sending my greeting from China. >> Today, one of my postfix server can not telnet any other mail server's >> port 25. It's working before 9:00am(bejing time CHina), I have restart the >> mail server and reinstall the postfix. but it's looks like not working. How >> can I fix this problem. Thanks for your help >> TOM >> > > Check your firewall settings to see if the connection is being blocked. >