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电子邮件在传输过程中重建是常见的吗？

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电子邮件在传输过程中重建是常见的吗？

我遇到了一个问题，我的网站的一些用户抱怨他们收到了空邮件。在将他们的电子邮件内容和邮件标题与我收到的邮件内容和邮件标题进行比较后，我倾向于认为他们的邮件服务器以某种方式更改了内容。可能是垃圾邮件过滤器或病毒过滤器？但我无法通过他们的邮件标题确定其中任何一个是否存在。

我已经在 GMail 和 Exchange 2010 上进行了测试，标头结果大致相同。

Delivered-To: [email protected]
Received: by 10.60.80.68 with SMTP id p4csp162755oex;
        Wed, 16 Jan 2013 05:01:10 -0800 (PST)
X-Received: by 10.112.25.70 with SMTP id a6mr591545lbg.117.1358341269727;
        Wed, 16 Jan 2013 05:01:09 -0800 (PST)
Return-Path: <[email protected]>
Received: from sending.mail.server.com (sending.mail.server.com [212.212.212.212])
        by mx.google.com with ESMTP id n2si11385089lbk.106.2013.01.16.05.01.08;
        Wed, 16 Jan 2013 05:01:09 -0800 (PST)
Received-SPF: neutral (google.com: 193.15.255.103 is neither permitted nor denied by best guess record for domain of [email protected]) client-ip=193.15.255.103;
Authentication-Results: mx.google.com;
       spf=neutral (google.com: 193.15.255.103 is neither permitted nor denied by best guess record for domain of [email protected]) [email protected]
X-AuditID: 0a0201f8-b7f646d000000e46-26-50f6a494a5ce
Received: from webserver (Unknown_Domain [192.168.7.111])
  by sending.mail.server.com (Corporate mail) with SMTP id A2.B0.03654.494A6F05; Wed, 16 Jan 2013 14:01:08 +0100 (CET)
Message-ID: <[email protected]>
MIME-Version: 1.0
From: "Web Service"
 <[email protected]>
To: [email protected]
Date: 16 Jan 2013 14:01:07 +0100
Subject: The Subject
Content-Type: multipart/alternative;
 boundary=--boundary_35_281f82f0-3971-4c42-a8e1-f56216afbefa


----boundary_35_281f82f0-3971-4c42-a8e1-f56216afbefa
Content-Type: text/plain; charset=iso-8859-1
Content-Transfer-Encoding: quoted-printable

用户似乎使用 Exchange 2003 作为服务器，他们收到的消息使用的边界与我的服务器生成的边界不同。因此，我认为电子邮件已在用户端某处重新创建，并且当时丢失了部分内容。

x-mimeole: Produced By Microsoft Exchange V6.5
Received: from their.last.mail.server.net ([10.150.128.35]) by
 computer.corporate.net with Microsoft SMTPSVC(6.0.3790.4675); Tue, 15 Jan
 2013 13:22:30 +0200
Content-Type: multipart/alternative;
  boundary="----_=_NextPart_003_01CDF312.9B0E9F00"
Received: from another.of.their.mail.servers.net ([10.150.129.56]) by
 their.last.mail.server.net with Microsoft SMTPSVC(6.0.3790.4675); Tue, 15 Jan
 2013 12:22:30 +0100
Received: from mail.server.net (mumrelp001.nsn-inter.net
 [93.183.13.135]) by another.of.their.mail.servers.net (8.12.11.20060308/8.12.11)
 with ESMTP id r0FBMSDH026761 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA
 bits=256 verify=OK) for <[email protected]>; Tue, 15 Jan 2013
 12:22:28 +0100
Received: from sending.mail.server.com (sending.mail.server.com [212.212.212.212]) by
 mail.server.net (8.13.8/8.13.8) with ESMTP id r0FBMRBq001875 for
 <[email protected]>; Tue, 15 Jan 2013 12:22:27 +0100
Received: from webserver (Unknown_Domain [192.168.7.111]) by sending.mail.server.com
 (Corporate mail) with SMTP id 30.F9.03654.3FB35F05; Tue, 15 Jan 2013 12:22:27
 +0100 (CET)
Content-Class: urn:content-classes:message
Subject: The Subject
Date: Tue, 15 Jan 2013 13:22:26 +0200
Message-ID: <[email protected]>
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
Thread-Topic: The Subject
Thread-Index: Ac3zEpv+A9o/QUbWTMmfmvqg/aBDEg==
From: Web Service <[email protected]>
To: "Name of user" <[email protected]>
MIME-Version: 1.0

------_=_NextPart_003_01CDF312.9B0E9F00
Content-Type: text/plain; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

电子邮件在传输过程中重建是否很常见？最常见的原因是什么？如何防止这种情况发生？

答案1

电子邮件在传输系统时确实会被修改，但唯一应该被修改的是邮件头，邮件头会添加有关正在传输的系统的信息。邮件正文永远不应该被修改。

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