Re: [courier-users] esmtp listen only localhost

[Gordon Messmer]

On May 30, 2005, at 1:15 PM, Phillip Hutchings wrote: Proto Recv-Q Send-Q Local Address � � � � � � � Foreign Address � � � � � � State <...> tcp� � � � 0� � � � � 0 � � � � 127.0.0.1:25� � � � � � � � � � 0.0.0.0:* � � � � � � � � � � � LISTEN <...> This tells you that the courier mail server on 127.0.0.1:25 is listening for connections on 0.0.0.0/0:25, ie all addresses. No, Andr� was correct.� If the "Local Address" isn't 0.0.0.0, then it's the address of a local interface.� When it's the address of a local interface, the kernel will only accept connections from that interface.� In this case, his sendmail server is listening on the loopback device, only.