What is mail header?

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Line 32: Line 32:
 
  Received: from [11.11.111.111] by mail.example.com via HTTP;  
 
  Received: from [11.11.111.111] by mail.example.com via HTTP;  
  
    Tue, 29 Mar 2005 15:11:45 PST
+
Tue, 29 Mar 2005 15:11:45 PST
    Date: Tue, 29 Mar 2005 15:11:45 -0800 (PST)
+
Date: Tue, 29 Mar 2005 15:11:45 -0800 (PST)
    From: Mr Jones
+
From: Mr Jones
    Subject: Hello
+
Subject: Hello
    To: Mr Smith
+
To: Mr Smith
  
 
In the example, headers are added to the message three times:
 
In the example, headers are added to the message three times:
Line 42: Line 42:
 
''When Mr. Brown composes the email''
 
''When Mr. Brown composes the email''
  
    Date: Tue, 29 Mar 2005 15:11:45 -0800 (PST)
+
Date: Tue, 29 Mar 2005 15:11:45 -0800 (PST)
    From: Mr Brown
+
From: Mr Brown
    Subject: Hello
+
Subject: Hello
    To: Mr Black
+
To: Mr Black
  
 
''Mr. Brown sends email through his email provider, mail.example.com''
 
''Mr. Brown sends email through his email provider, mail.example.com''
  
    Message-ID: <20050329231145.62086.mail@mail.example.com>
+
Message-ID: <20050329231145.62086.mail@mail.example.com>
    Received: from [11.11.111.111] by mail.example.com via HTTP;  
+
Received: from [11.11.111.111] by mail.example.com via HTTP;  
    Tue, 29 Mar 2005 15:11:45 PST
+
Tue, 29 Mar 2005 15:11:45 PST
  
 
''When the message transfers from Mr. Brown's email provider to Mr. Black's example address''
 
''When the message transfers from Mr. Brown's email provider to Mr. Black's example address''
  
    Delivered-To: MrBlack@example.com
+
Delivered-To: MrBlack@example.com
    Received: by 10.36.81.3 with SMTP id e3cs239nzb;
+
Received: by 10.36.81.3 with SMTP id e3cs239nzb;
    Tue, 29 Mar 2005 15:11:47 -0800 (PST)
+
Tue, 29 Mar 2005 15:11:47 -0800 (PST)
    Return-Path: MrBrown@example.com
+
Return-Path: MrBrown@example.com
    Received: from mail.example.com (mail.example.com  
+
Received: from mail.example.com (mail.example.com  
    ([111.111.11.111])  
+
([111.111.11.111])  
    by mx.example.com with SMTP id h19si826631rnb;  
+
by mx.example.com with SMTP id h19si826631rnb;  
    Tue, 29 Mar 2005 15:11:47 -0800 (PST)
+
Tue, 29 Mar 2005 15:11:47 -0800 (PST)
  
  

Revision as of 08:03, 18 November 2011

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