Thanks for replying -
On Tue, Jan 15, 2013 at 1:55 PM, Wietse Venema <wie...@porcupine.org> wrote:
> Alexander Farber:
>> And have opened port 25 in the firewall:
>>
>> But now when I send a mail to s...@videoskat.de
>> there is nothing to see in postfix logs:
>
> Nothing happens unless a connection is made. Does tcpdump
> show any connections coming to your system at TCP port 25?
sorry for the stupid question, but how to use
tcpdump to check for incoming connections?
I've come up only with these commands sofar:
# netstat -an |grep -w 25
tcp 0 0 127.0.0.1:25 0.0.0.0:*
LISTEN
# iptables -L|grep -w smtp
ACCEPT tcp -- anywhere anywhere state NEW
tcp multiport dports smtp,ssh
Thanks
Alex
