Difference between pages "Unix" and "Gmail Header Format"

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m (Added DKIM Link)
 
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'''Unix''' or '''UNIX''' is a general-purpose multi-user [[operating system]] developed mostly by [[Ken Thompson]] and [[Dennis Ritchie]] during 1969 at [[Bell Labs]]. About one year later during the early 1970s UNIX was unveiled to the general public. The original goal as it is today was to create a stable, secure, and powerful operating system that is portable to many different hardware platforms.
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Because [[Gmail]] is a [[web based application]] and can be changed at any time, the information in this article may not reflect the current state of Gmail headers. In general Gmail headers have a [[DomainKeys Identified Mail]] (DKIM) signature line that contains a signature for the message in question. These lines appear above the standard Message-ID fields. These signatures are of the format:
  
Today UNIX has evolved into three main categories which all flavors of UNIX derive from: [[BSD]] (Berkley Software Development), [[System V]] Release 7, and hybrid. Some of the most poplar flavors of UNIX are: [[IBM]]’s [[AIX]], [[Sun Microsystems]]' [[Solaris]], [[SGI]]’s [[IRIX]], [[Linux]], [[OpenBSD]], and [[FreeBSD]].
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<pre>DKIM-Signature: a=rsa-sha1; c=relaxed/relaxed;
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        d=gmail.com; s=beta;
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        h=domainkey-signature:received:received:message-id:date:from:to:subject:mime-version:content-type;
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        b=OITvzFGKQQUjywUQB7U8dQypDAeOGqBIhfcb8VKioP2UU5P2aJL3l2adoyRqSp9h/Fo9A6wY5EIRsfaCWM9ge+EzCob/
 +
4p85jcEn3uW8dpRyBFQXMuK2q0RMIk3FznrXAM4W5FvoJIPP04qgXErar+/hZq03vEUIErV1v6p2Fy4=
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DomainKey-Signature: a=rsa-sha1; c=nofws;
 +
        d=gmail.com; s=beta;
 +
        h=received:message-id:date:from:to:subject:mime-version:content-type;
 +
        b=oC+hlWhBboQ+RlsKCL4r2pQxpgKRM9iUgCBmw9wZqlEcxj+A3q+fJkDXgLKmI1twfvTHj7GQ3HDzSLzw982UD
 +
+CPh1bPQxkhNbylUBRtwpoFeixIk7OmR2YE1iYrYpQXf3dEcXNfKs7ffoeY18plJNJG0S8RRmXLaR6XqXFVUoo=
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</pre>
 +
 
 +
Note that some of the <tt>Received</tt> lines will contain hosts with IP addresses like 10.x.x.x. These addresses are non-routable but part of the Gmail system. The remaining headers look like:
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<pre>Message-ID: <f6a363400703050910y7d591d42raf015fcef16f95ea@mail.gmail.com>
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Date: Mon, 5 Mar 2007 09:10:41 -0800
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From: UserName <address@gmail.com>
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To: OtherUserName <address@system.com>
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Subject: Subject Line
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MIME-Version: 1.0</pre>
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The format of the Message-ID field is not known.
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== External Links ==
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* [https://mail.google.com/ Gmail]  
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* [http://www.elandsys.com/resources/sendmail/dkim.html DKIM Signatures]

Revision as of 14:14, 29 April 2007

Because Gmail is a web based application and can be changed at any time, the information in this article may not reflect the current state of Gmail headers. In general Gmail headers have a DomainKeys Identified Mail (DKIM) signature line that contains a signature for the message in question. These lines appear above the standard Message-ID fields. These signatures are of the format:

DKIM-Signature: a=rsa-sha1; c=relaxed/relaxed;
        d=gmail.com; s=beta;
        h=domainkey-signature:received:received:message-id:date:from:to:subject:mime-version:content-type;
        b=OITvzFGKQQUjywUQB7U8dQypDAeOGqBIhfcb8VKioP2UU5P2aJL3l2adoyRqSp9h/Fo9A6wY5EIRsfaCWM9ge+EzCob/
4p85jcEn3uW8dpRyBFQXMuK2q0RMIk3FznrXAM4W5FvoJIPP04qgXErar+/hZq03vEUIErV1v6p2Fy4=
DomainKey-Signature: a=rsa-sha1; c=nofws;
        d=gmail.com; s=beta;
        h=received:message-id:date:from:to:subject:mime-version:content-type;
        b=oC+hlWhBboQ+RlsKCL4r2pQxpgKRM9iUgCBmw9wZqlEcxj+A3q+fJkDXgLKmI1twfvTHj7GQ3HDzSLzw982UD
+CPh1bPQxkhNbylUBRtwpoFeixIk7OmR2YE1iYrYpQXf3dEcXNfKs7ffoeY18plJNJG0S8RRmXLaR6XqXFVUoo=

Note that some of the Received lines will contain hosts with IP addresses like 10.x.x.x. These addresses are non-routable but part of the Gmail system. The remaining headers look like:

Message-ID: <f6a363400703050910y7d591d42raf015fcef16f95ea@mail.gmail.com>
Date: Mon, 5 Mar 2007 09:10:41 -0800
From: UserName <address@gmail.com>
To: OtherUserName <address@system.com>
Subject: Subject Line
MIME-Version: 1.0

The format of the Message-ID field is not known.

External Links