国外的公司发邮件给国内，为什么邮件经常要过几个小时或1天后才能到达呢？

loveing

国外的公司发邮件给国内，为什么邮件经常要过几个小时或1天后才能到达呢？
有时过了1天也到达不了。最后这个邮件就没有了。

下面是一个过了7小时才到达的邮件：
qmail 33814 invoked from network 是什么东西？是不是GFW？慢的这7个小时就耽误在这里了

Received: from spam.efunds.com.cn ([10.8.93.34])
        by mail.efunds.com.cn (IceWarp 9.3.2) with ESMTP id AJU15042
        for <zhangwen@efunds.com.cn>; Fri, 19 Jun 2009 11:01:42 +0800
Received: from smtp06.on-nets.com (smtp06.on-nets.com [210.0.247.196])
by spam.efunds.com.cn (Spam Firewall) with ESMTP id C00DA7A7D3
for <zhangwen@efunds.com.cn>; Fri, 19 Jun 2009 11:01:23 +0800 (CST)
Received: (qmail 33814 invoked from network); 19 Jun 2009 03:01:22 -0000
Received: from unknown (HELO mail.on-nets.com) ([210.0.227.33])
          (envelope-sender <terence.lee@htsec.com.hk>)
          by smtp06.on-nets.com (qmail-ldap-1.03) with SMTP
          for <zhangwen@efunds.com.cn>; 19 Jun 2009 03:01:22 -0000
Received: from unknown (HELO LENOVO91F595C2) ([218.188.91.162])
  by mail.on-nets.com with ESMTP; 19 Jun 2009 11:01:21 +0800
Return-Receipt-To: "Terence Lee" <terence.lee@htsec.com.hk>
From: "Terence Lee" <terence.lee@htsec.com.hk>
To: <zhangwen@efunds.com.cn>
Subject: =?big5?B?tPq41bZspfOo7CB6aGFuZ3dlbkBlZnVuZHMuY29tLmNu?=
Date: Fri, 19 Jun 2009 11:01:16 +0800
Message-ID: <!&!AAAAAAAAAAAYAAAAAAAAAFkPVdwTuTtKofKlgKNFNLfCgAAAEAAAAJMl8sHZQBFMt/3rdE1zQVMBAAAAAA==@htsec.com.hk>
MIME-Version: 1.0
Content-Type: multipart/alternative;
boundary="----=_NextPart_000_02E3_01C9F0CD.44C76550"
X-Mailer: Microsoft Office Outlook 12.0
Thread-Index: AcnwijZJ7AIWUaw/QSuyBikyGZWLJw==
Content-Language: zh-hk
Disposition-Notification-To: "Terence Lee" <terence.lee@htsec.com.hk>

chj97j

我觉得没有慢啊，
Fri, 19 Jun 2009 11:01:23 +0800 (CST)
19 Jun 2009 03:01:22 -0000
上面的+0800是在东八区，
而下面的-0000应该是在格林尼治，0时区
所以在时间上应该是一致的。

钉子

这个有意思.