hi,
A mail was sent from a sme user to xxx@gmail.com.  there was a 4 hour delay in the reciepent actually receiving it.  how can we arrive at what caused the delay.  the mail header of the reciepient is added here.
                                                                                                                                                                                                                                                               
Delivered-To: xxx@gmail.com
Received: by 10.100.205.10 with SMTP id c10cs202210ang;
        Tue, 23 Dec 2008 23:18:29 -0800 (PST)
Received: by 10.65.74.16 with SMTP id b16mr5037352qbl.1.1230103109269;
        Tue, 23 Dec 2008 23:18:29 -0800 (PST)
Return-Path: <abc@dataone.in>
Received: from mumbbmr1.dataone.in ([218.248.240.249])
        by mx.google.com with ESMTP id k7si16409087qba.26.2008.12.23.23.18.27;
        Tue, 23 Dec 2008 23:18:29 -0800 (PST)
Received-SPF: pass (google.com: domain of abc@dataone.in designates 218.248.240.249 as permitted sender) client-ip=218.248.240.249;
Authentication-Results: mx.google.com; spf=pass (google.com: domain of abc@dataone.in designates 218.248.240.249 as permitted sender) smtp.mail=dpkgroup@dataone.in
Received: from conversion-daemon.mumbbmr1.dataone.in by mumbbmr1.dataone.in
 (Sun Java System Messaging Server 6.2-6.01 (built Apr  3 2006))
 id <0KCD00A01ABREP00@mumbbmr1.dataone.in>
 (original mail from abc@dataone.in) for XXX@gmail.com; Wed,
 24 Dec 2008 12:44:43 +0530 (IST)
Received: from smeserver.abc.in ([59.98.48.220])
 by mumbbmr1.dataone.in (Sun Java System Messaging Server 6.2-6.01 (built Apr 3
 2006)) with ESMTPA id <0KCD0071PDCLUGT0@mumbbmr1.dataone.in> for
 xxx@gmail.com; Wed, 24 Dec 2008 12:42:25 +0530 (IST)
Received: (qmail 24643 invoked by uid 453); Wed, 24 Dec 2008 03:00:48 +0000
Received: from localhost (HELO localhost) (127.0.0.1)
 by dpkgroup.in (qpsmtpd/0.40) with ESMTP; Wed, 24 Dec 2008 08:30:48 +0530
Received: from 59.92.160.102 ([59.92.160.102])
 by 59.96.49.220 (Horde MIME   library) with HTTP; Wed, 24 Dec 2008 08:30:48 +0530
Date: Wed, 24 Dec 2008 08:30:48 +0530
From: Madan Sampathraman <madan@abc.in>
Subject: FW: zero hour defect on following engines
To: xxx@gmail.com
Message-id: <20081224083048.ni5uij1lr4cg4ocg@59.98.48.220>
MIME-version: 1.0
Content-type: multipart/mixed; boundary="Boundary_(ID_MpNNE4EViSeXkbP0eWmlyA)"
X-Virus-Checked: Checked by ClamAV on abc.in
User-Agent: Internet Messaging Program (IMP) H3 (4.1.6)
here is the qpsmtpd log entry for that mail
2008-12-24 08:24:11.147124500 24388 logging::logterse plugin: ` 127.0.0.1   localhost   localhost   <madan@abc.in>   <xxx@gmail.com>,Mail::Address=ARRAY(0xb7543fb4)   queued      <20081224082410.gzd2nflu68kkw0o8@59.98.48.220>   
2008-12-24 08:24:33.957675500 24431 logging::logterse plugin: ` 127.0.0.1   localhost   localhost   <madan@abc.in>   <xxx@gmail.com>,Mail::Address=ARRAY(0xb7543fac)   queued      <20081224082433.8aytha0pessg04kw@59.98.48.220>   
2008-12-24 08:24:54.114115500 24472 logging::logterse plugin: ` 127.0.0.1   localhost   localhost   <madan@abc.in>   <xxx@gmail.com>,Mail::Address=ARRAY(0xb7543fa4)   queued      <20081224082453.y864b1u8840g8kk8@59.98.48.220>   
2008-12-24 08:30:48.519037500 24638 logging::logterse plugin: ` 127.0.0.1   localhost   localhost   <madan@abc.in>   <xxx@gmail.com>,Mail::Address=ARRAY(0xb7544f3c)   queued      <20081224083048.ni5uij1lr4cg4ocg@59.98.48.220>
Any inputs will be appreciated,
Thanks
Veeresh