[clug] Duplicate messages from the mailing list

[Paul Warren]

Well, whatever the problem was, switching to postfix has fixed it!

exim4 was doing ~6.5 second transactions via the SuperTool at
http://www.mxtoolbox.com
now postfix is doing the same thing in 1.2 seconds.

And the mailman lists I'm subscribed to are no longer sending 
duplicates, hooray!

Still not entirely sure what was causing it, but it seems to be working now!

Cheers
--
Paul Warren

PS. Please do tell me if you notice that my current config is less than 
ideal!

On 10/05/2012 21:08, Paul Warren wrote:
> On 10/05/2012 10:13, Stephen Rothwell wrote:
>> Hi Paul,
>>
>> On Thu, 10 May 2012 09:16:39 +1000 Paul Warren<pwarren at pwarren.id.au>
>> wrote:
>>>
>>> Yeah, it seems that it's coming twice from the mailing list, not every
>>> message though. Pasting in the headers of one set of duplicates.
>>
>> OK the diff is:
>>
>> --- m1 2012-05-10 09:58:32.213095866 +1000
>> +++ m2 2012-05-10 09:58:44.928971592 +1000
>> @@ -1,11 +1,11 @@
>> Return-path:<linux-bounces at lists.samba.org>
>> Envelope-to: pwarren at pwarren.id.au
>> -Delivery-date: Sat, 28 Apr 2012 11:31:58 +1000
>> +Delivery-date: Sat, 28 Apr 2012 12:51:57 +1000
>> Received: from fn.samba.org ([216.83.154.106] helo=mail.samba.org)
>> by pwarren.id.au with esmtp (Exim 4.72)
>> (envelope-from<linux-bounces at lists.samba.org>)
>> - id 1SNwM0-0005GA-1D
>> - for pwarren at pwarren.id.au; Sat, 28 Apr 2012 11:31:58 +1000
>> + id 1SNxbO-0005Yf-Q3
>> + for pwarren at pwarren.id.au; Sat, 28 Apr 2012 12:51:57 +1000
>> Received: from fn.samba.org (localhost [127.0.0.1])
>> by mail.samba.org (Postfix) with ESMTP id B16C6AD3D0;
>> Thu, 26 Apr 2012 15:33:18 -0600 (MDT)
>>
>> Which, as you say, means it was delivered from fn.samba.org to your
>> server more than once. I did some snooping and here is what is in the
>> log on fn.samba.org:
>>
>> Apr 26 15:43:21 fn postfix/smtp[21997]: B16C6AD3D0:
>> to=<pwarren at pwarren.id.au>, relay=pwarren.id.au[59.167.251.97]:25,
>> delay=603, delays=0.06/1.9/0.84/600, dsn=4.4.2, status=deferred
>> (conversation with pwarren.id.au[59.167.251.97] timed out while
>> sending end of data -- message may be sent more than once)
>> Apr 26 16:06:26 fn postfix/smtp[29586]: B16C6AD3D0:
>> to=<pwarren at pwarren.id.au>, relay=pwarren.id.au[59.167.251.97]:25,
>> delay=1987, delays=1386/0.02/0.84/600, dsn=4.4.2, status=deferred
>> (conversation with pwarren.id.au[59.167.251.97] timed out while
>> sending end of data -- message may be sent more than once)
>>
>> And so on ... There were 57 of these between Apr 26 15:43:21 and Apr 29
>> 16:31:50 (whatever timezone fn.samba.org sits in). So you are lucky that
>> only 2 were delivered :-)
>>
>> So, it looks like your server is taking too long to respond to the SMTP
>> conversation (which could be caused by your virus/spam checker if that is
>> done while the conversation is happening).
>>
>
> Oh, heh, I got the 57 for that message, along with a similar amount for
> other messages over that weekend!
>
> So, there's something in my config that's taking too long, now I have to
> figure out what it is!
>
> I've used the dpkg-reconfigure exim4config method of setting it up to
> listen on all interfaces for pwarren.id.au, and that's it.
>
> I don't think there is any virus or spam scanning with the default, and
> I can't see anything in the config file. But I am confused at which
> config file I'm supposed to be looking at, there's quite a few different
> ones in /etc/exim4.
>
> Perhaps it's something to do with DKIM? The only odd things in the logs
> are:
>
> 2012-05-01 07:02:06 1SOxZU-0005MD-JF DKIM: d=gmail.com s=20120113
> c=relaxed/rela
> xed a=rsa-sha256 [invalid - public key record (currently?) unavailable]
> 2012-05-01 07:02:06 1SOxZU-0005MD-JF <= linux-bounces at lists.samba.org
> H=fn.samba.org (mail.samba.org) [216.83.154.106] P=esmtp S=4170
> id=4F9BB23B.9090801 at stillhq.com
> 2012-05-01 07:02:07 1SOxZU-0005MD-JF => pwarren <pwarren at pwarren.id.au>
> R=procmail T=procmail_pipe
> 2012-05-01 07:02:07 1SOxZU-0005MD-JF Completed
>
> 2012-05-01 07:04:52 1SOxcA-0005MJ-1J DKIM: d=gmail.com s=20120113
> c=relaxed/relaxed a=rsa-sha256 [invalid - public key record (currently?)
> unavailable]
> 2012-05-01 07:04:52 1SOxcA-0005MJ-1J SMTP connection lost after final
> dot H=w01.openindiana.everycity.co.uk [95.131.249.92] P=esmtp
>
> more log files at http://pwarren.id.au/logs/
>
> Thanks for the help!
> --
> Paul Warren