Hotmail邮件中的X邮件传递 [英] X-Message-Delivery in Hotmail Messages
问题描述
最近，我一直盯着破译hotmail收件箱/垃圾文件夹的位置.经过长时间的搜索，我发现Hotmail/Outlook正在使用他们在每封邮件中输入的X-Message-Delivery标签来确定很多东西.如果您转到电子邮件的来源，则可以看到类似于以下内容的X消息传递:
Recently I stared deciphering the hotmail inbox/junk folder placement. After long searching I found out that Hotmail/Outlook is using their X-Message-Delivery tag they input in each mail, to determine alot of things. If you go to source of an e-mail you can see an X-Message-Delivery similar to this :
Vj0xLjE7dXM9MDtsPTE7YT0wO0Q9MjtHRD0yO1NDTD00
如果您对其进行BASE64解码，则会得到
which if you BASE64-Decode it you get
V=1.1;us=0;l=1;a=0;D=2;GD=2;SCL=4
根据我的研究，我发现以下原因导致消息进入垃圾文件夹
Based upon my research, I found out that following things are causing a message to go to the junk folder,
If "D=x" is higher then 1
If "GD=x" is higher then 1
If "SCL=x" is higher then 0
除此之外，我发现V = 1.1始终相同，并且在收到的任何电子邮件(或至少检查的电子邮件)中都没有改变
Other then that I found out that V=1.1 is allways the same and does not change in any e-mail I received (or atleast the ones I checked)
我认为，"a = x"是指发送方在接收方地址簿中，还是被接收方至少知道的含义.如果其值为0，则它是一个新的发件人，因此更有可能进入垃圾文件夹；如果其值为1，则有助于进入收件箱.
I think that "a=x" is meaning if the sender is in the receivers adressbook, or is atleast known by the receiver. If its 0 its a new sender, and therefor more likely to go to the junk folder, if its a=1 it helps to get into inbox.
我认为l = 1或l = 0与之有关，如果打开时此发送者的图像是否被阻止.尽管我发现这不是很一致.
I think the l=1 or l=0 has something to with, if images are blocked or not for this sender upon an open. Although I did not find this very consistent.
您是否知道这些标签代表什么?
Does any of you know, what these tags stand for?
D=
GD=
us=
如果这样做，您是否还知道它们从0变为1或2的变化?
If you do, do you also know what they would change from 0 to 1 or 2 ?
谢谢！
推荐答案
mime-version
mime-version
SCL是指垃圾邮件可信度(SCL)
SCL refers to Spam Confidence Level (SCL)
服务未使用2、3、4、7和8的SCL等级. SCL 评级为5或6被认为是可疑垃圾邮件，但不确定性较高 比SCL等级9(被认为是某些垃圾邮件)更是垃圾邮件. 可以配置针对垃圾邮件和高可信度垃圾邮件的不同操作 通过Exchange管理中心中的内容过滤器策略.为了 详细信息，请参阅配置内容过滤器策略.你也可以 为符合特定条件的邮件设置SCL等级，方法是 使用传输规则，如创建传输规则中所述 通过设置垃圾邮件的置信度，将邮件识别为垃圾邮件或非垃圾邮件 (SCL).
SCL ratings of 2, 3, 4, 7, and 8 are not used by the service. An SCL rating of 5 or 6 is considered suspected spam, which is less certain to be spam than an SCL rating of 9, which is considered certain spam. Different actions for spam and high confidence spam can be configured via your content filter policies in the Exchange admin center. For more information, see Configure Content Filter Policies. You can also set the SCL rating for messages that match specific conditions by using Transport rules, as described in Create a transport rule to identify mail as spam or not spam by setting the spam confidence level (SCL).
http://technet.microsoft.com/en-us/library/dn798345(v=exchg.150).aspx
http://technet.microsoft.com/en-us/library/jj200686(v=exchg.150).aspx
GD ..经过详尽的搜索..我相信它是指GD2，它是与PHP相关的图形库，但我没有引用来证实这一点.或者，我发现模糊地提及了保证交付"一词，但这是一个非常微妙的提及，因此找不到任何进一步的参考.但是，这确实是有道理的.
GD.. after an exhaustive search.. I believe that it refers to the GD2, the graphics library associated with PHP but I have no references to substantiate that. Or, I found an obscure mention of a term referred to as 'guarantee delivery' but it was a very subtle mention and I could not found any further reference to it. However, it does make sense possibly..
电子邮件发件人已经使Hotmail可以到达并受到特殊对待，并被标记为无论如何都保证不发送垃圾邮件...保证传递".似乎合理.
Email senders that have given Hotmail a reach around and gotten special treatment as being flagged 'not spam no matter what.. guarantee delivery'. Seems reasonable..
在GD的所有RFC中，我唯一能找到的参考文献是 RFC6035 ，它定义了 GD 作为 GapDuration
The only reference I could find in any RFCs for GD was RFC6035 Which defines GD as GapDuration
"GD" EQUAL (1*7DIGIT) ;0-3,600,000 -- milliseconds
BLD=0 BD=0 GLD=2.0 GD=500 GMIN=16
GDuration gd = (GDuration) table.get(context);
但是我真的不认为他们之间有联系.
but I don't really think they're related.
我怀疑这是否意味着Manuel猜测的Generate-Delivery-Report.原因是，Generate-Delivery-Report已经是一个已定义的标头字段，因此不必创建另一个字段.
I doubt that it means Generate-Delivery-Report as Manuel guessed. Reason being, Generate-Delivery-Report is already a defined header field so it's not necessary to create another field.
X-标头最初是在 RFC822第4部分
当我放弃寻找GD的时候，我退出了.
By the time I gave up on my search of GD I quit.
无论他们是什么意思，我敢打赌，很早以前他们已经忘记了他们的意思，以至于Hotmail的任何机构都可能不知道这意味着什么，甚至不太可能有任何可行的方法来改变您不管他们是什么.我还是很震惊，以至于我什么都找不到..我通常在研究和挖掘晦涩的数据上确实很棒. ; p
Whatever they mean, I'm betting that whatever they may have meant has been forgotten so long ago that probably no body at Hotmail even knows what it means anymore and even more unlikely that there will be any actionable methods for you to change whatever they are. I'm kinda still in shock that I couldn't find ANYTHING.. I'm usually really awesome at researching and digging up obscure data. ;p
- RFC2076:常见的Internet邮件标题
- RFC2045:多用途Internet邮件扩展(MIME)第一部分:Internet邮件正文的格式
- RFC4021:邮件和MIME标头字段的注册
- BCP178
- RFC2076 : Common Internet Message Headers
- RFC2045 : Multipurpose Internet Mail Extensions (MIME) Part One: Format of Internet Message Bodies
- RFC4021 : Registration of Mail and MIME Header Fields
- BCP178
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