[clug] Duplicate messages from the mailing list

[Paul Warren]

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