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2 hour delay on messages

dtbaker

Basic Pleskian
I have a few clients complaining that they have a two hour delay on emails sent to them.

They can re-produce this by sending themselves an email with a 1MB+ attachment. I believe it also occurs (sometimes) with plain text emails and no attachments.

Initially I thought the problem was their computer (virus checker or something), but the emails do not come through in webmail or on their iphone. And now other clients are complaining about delays.

Here are headers from one of the delayed emails:

Received: (qmail 28464 invoked from network); 28 Feb 2011 15:52:30 +1000
Received: from fallbackmx09.syd.optusnet.com.au (211.29.132.242) by [OURSERVER].com with (DHE-RSA-AES256-SHA encrypted) SMTP; 28 Feb 2011 15:52:29 +1000
Received: from mail09.syd.optusnet.com.au (mail09.syd.optusnet.com.au [211.29.132.190]) by fallbackmx09.syd.optusnet.com.au (8.13.1/8.13.1) with ESMTP id p1S3n1FB011754 for <info@[removed]>; Mon, 28 Feb 2011 13:49:01 +1000
Received: from localhost.localdomain (webmail05.syd.optusnet.com.au [211.29.132.239]) by mail09.syd.optusnet.com.au (8.13.1/8.13.1) with ESMTP id p1S3mwb2028353 for <info@[removed]>; Mon, 28 Feb 2011 13:48:58 +1000
Message-Id: <201102280348.p1S3mwb2028353@mail09.syd.optusnet.com.au>
Mime-Version: 1.0
Received: from ([203.41.119.7]) by webmail05.syd.optusnet.com.au with http (user=sender@[removed]); Mon, 28 Feb 2011 13:48:58 +1000
From: sender@[removed]
To: info@[removed]
Date: Mon, 28 Feb 2011 13:48:58 +1000

as you can see, ourserver receives the email at 15:52, but it was sent at 13:48 (two hours and four minutes earlier)

another header from delayed email (this one is an email the client sent to himself at 9:14am, arrived 3 hours and 15 mins later):

Received: (qmail 17780 invoked from network); 1 Mar 2011 12:36:49 +1000
Received: from nskntqsrv02p.mx.bigpond.com (61.9.168.234) by [OURSERVER].com with SMTP; 1 Mar 2011 12:36:42 +1000
Received: from nskntotgx03p.mx.bigpond.com ([123.211.25.140]) by nskntmtas01p.mx.bigpond.com with ESMTP id <20110228231546.DCKS17108.nskntmtas01p.mx.bigpond.com@nskntotgx03p.mx.bigpond.com> for <craig@[removed]>; Mon, 28 Feb 2011 23:15:46 +0000
Received: from Craig ([123.211.25.140]) by nskntotgx03p.mx.bigpond.com with ESMTP id <20110228231427.KYJX13584.nskntotgx03p.mx.bigpond.com@Craig> for <craig@[removed]>; Mon, 28 Feb 2011 23:14:27 +0000
From: "Craig" <craig@[removed]>
To: <craig@[removed]>
Subject: test with attachments
Date: Tue, 1 Mar 2011 09:14:27 +1000
MIME-Version: 1.0


I thought the issue may be some sort of timeout?

Any ideas or log files I can look for errors?

When I sent a large email to the customer, I see the email file appear in /var/qmail/mailnames/domain.com/info/Maildir/new/ almost instantly and he receives it in his imap inbox shortly after that.
Sending email with large attachments via webmail to himself works fine.


Thanks heaps,
David
 
Last edited:
Is there an extra service or something that should be running on the box? Maybe something that is firewalled? Maybe the other mail relay can't communicate properly with my server and keeps trying until a timeout occurs and they send the mail anyway?
 
Did you try the first steps for the resolving any problem with mail?

1. Analyse of main Plesk maillog /usr/local/psa/var/log/maillog
2. Rebuilding mailsettings with
# /usr/local/psa/admin/sbin/mchk --with-spam
 
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