Почему я получил это письмо с опозданием на 3 дня?

Кто-то (SomebodyThere@icbm.de) отправил мне электронное письмо 8 сентября, и я получил его только 11 сентября. Кто-нибудь может пролить свет, почему?

Это заголовки:

From - Fri Sep 11 11:27:52 2015
X-Account-Key: account6
X-UIDL: UID38-13942566
X-Mozilla-Status: 0000
X-Mozilla-Status2: 00000000
X-Mozilla-Keys:                                                                                 
Return-path: <SomebodyThere@icbm.de>
Envelope-to: Me@MyEmailAddress.com
Delivery-date: Tue, 08 Sep 2015 03:19:36 -0600
Received: from [x.x.101.100] (port=52283 helo=smtp110.uni-oldenburg.de)
    by box95.bluehost.com with esmtps (TLSv1.2:DHE-RSA-AES256-GCM-SHA38:256)
    (Exim 4.84)
    (envelope-from <SomebodyThere@icbm.de>)
    id 1ZF3w-04Ok-2c
    for Me@MyEmailAddress.com; Tue, 08 Sep 2015 03:19:36 -0600
Received: from smtp.uni-oldenburg.de (localhost.localdomain [127.0.0.1])
    by localhost (Email Security Appliance) with SMTP id 5D43890E_5EEA3B
    for <Me@MyEmailAddress.com>; Tue,  8 Sep 2015 09:19:31 +0000 (GMT)
Received: from [x.x.80.9] (hp.icbm.uni-oldenburg.de [x.x.80.90])
    (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits))
    (Client did not present a certificate)
    by smtp110.uni-oldenburg.de (Sophos Email Appliance) with ESMTPSA id 02A0190B_5EEA83F
    for <Me@MyEmailAddress.com>; Tue,  8 Sep 2015 09:19:31 +0000 (GMT)
Message-ID: <55EEAB.5000702@icbm.de>
Date: Tue, 08 Sep 2015 11:19:55 +0200
From: <SomebodyThere@icbm.de>
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:5.0) Gecko/20110624 Thunderbird/5.0
MIME-Version: 1.0
To: <Me@MyEmailAddress.com>
Subject: Re: Hi again
References: <5591F.2xxx@icbm.de> <55ED62.1xxx@MyEmailAddress>
In-Reply-To: <55E2D9.1xxx@MyEmailAddress>
Content-Type: multipart/alternative;
 boundary="------------0209070105040904070600"
X-Identified-User: {0000:box95.bluehost.com:local:local} {sentby:Delivered locally}