[Mailman-Users] Incoming messages are not received in Mailman+ Postfix
roy vinner
roypivn at indiana.edu
Tue Jul 26 19:56:07 CEST 2005
John Dennis wrote:
> On Tue, 2005-07-26 at 10:17 -0500, roy vinner wrote:
>
>>I tried 'ping'ing and received no answer for 128.252.27.164 .
>>
>>My system admin tested it and reported that "nothing is listening on
>>that port:
>>------
>>sg at james% telnet nrg.wustl.edu 25
>>Trying 128.252.27.164...
>>telnet: Unable to connect to remote host: Connection refused
>>sg at james% "
>
>
> BTW, this really isn't a mailman issue, its postfix, its best to move
> this discussion to a postfix list or better yet visit www.postfix.org
> and read their doc. But let me give you one last set of suggestions:
Very much appreciated. I've installed and run pmfirewall and opened port
25 for both tcp and udp. Thank you for sticking up with me thus far :-).
> Connection refused typically means the port you're trying to connect to
> (port 25) is blocked by a firewall. It can be blocked in a variety of
> places, either on the machine you're running the server on or by any
> other router in between.
>
> BTW, connection refused does not mean nothing is listening on the port.
>
> To see if something is listening on the port you must go the local
> machine the server is running and either try to connect locally
>
> # telnet localhost 25
telnet localhost 25
Trying 127.0.0.1...
Connected to nrg.wustl.edu (127.0.0.1).
Escape character is '^]'.
220 nrg.wustl.edu ESMTP Postfix (2.1.4) (Mandrake Linux)
hello
502 Error: command not implemented
helo
501 Syntax: HELO hostname
helo nrg
250 nrg.wustl.edu
>
> -or-
>
> examine who is listening on the port using any of a variety of
> networking utilities, such as:
>
> # netstat -l -n | grep :25
>
> or
>
> # netstat -l | grep smtp
>
> Using the first example:
>
> # netstat -l -n | grep :25
> tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN
> tcp 0 0 192.168.0.0:25 0.0.0.0:* LISTEN
>
> This says port 25 is being listened on the localhost (loopback) because
> your loopback is 127.0.0.1 and its listening on 192.168.0.0 which is
> 192.168.0.0 (ficticious net addr).
My output is:
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN
> If nothing is listening on the external interface, then is postfix
> running? If so did you restart it after modify inet_interfaces to
> include the external interface?
>
yes. I've tried sending me after this and it is still not coming
through. Let me know if I should continue this on the postfix list, or
install sendmail, or whatever.
Many thanks for your assistance!
Roy
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