[Mailman-Users] Re: mail not being sent/received
Brad Knowles
brad at stop.mail-abuse.org
Fri Feb 18 18:27:16 CET 2005
At 11:27 AM -0500 2005-02-18, jpsota at gmail.com wrote:
>> 2) Your MTA is only listening your local loopback, i.e. your own machine
>> 127.0.0.1, and not your machines IP address.
>
> Hmm... I'm using sendmail. Can you please tell me how I'd check to see
> if this is the problem, and how to change it if it is?
Try this:
% netstat -na | grep '\.25[ ]'
tcp4 0 0 127.0.0.1.25 *.* LISTEN
tcp6 0 0 ::1.25 *.* LISTEN
Or this:
% netstat -na | grep '\.25[ ]'
tcp4 0 0 *.25 *.* LISTEN
tcp6 0 0 *.25 *.* LISTEN
Note that there are two white space characters between the two
square brackets -- there is a space character, and a tab character.
If you see output like the second example, then you have an MTA
that is listening on port 25 on all IP addresses and interfaces, for
both IPv4 and IPv6. If you see output like the first example, then
it's listening on port 25 for the IPv4 address 127.0.0.1, and port 25
on the equivalent IPv6 address.
--
Brad Knowles, <brad at stop.mail-abuse.org>
"Those who would give up essential Liberty, to purchase a little
temporary Safety, deserve neither Liberty nor Safety."
-- Benjamin Franklin (1706-1790), reply of the Pennsylvania
Assembly to the Governor, November 11, 1755
SAGE member since 1995. See <http://www.sage.org/> for more info.
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