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authorspot2004-09-12 05:11:46 +0000
committerspot2004-09-12 05:11:46 +0000
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tree381c71aab79b436c1dd28c865c2275ecc34d0444 /admin/www/mailman-admin/node8.html
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downloadmailman-4379eae18e7c9d00162f819478ae36ec40cc0eff.tar.gz
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Adding/updating documentation for the website:
- added mailman-admin member (in progress, but probably useable) - added mailman-member-es, the Spanish translation of the members' docs - updated mailman-member - updated some html files to link to these.
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+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
+<html>
+<head>
+<link rel="STYLESHEET" href="mailman-admin.css" type='text/css'>
+<link rel="first" href="mailman-admin.html" title='GNU Mailman - List Administration Manual'>
+<link rel='contents' href='contents.html' title="Contents">
+<link rel='last' href='about.html' title='About this document...'>
+<link rel='help' href='about.html' title='About this document...'>
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+<META NAME="description" CONTENT="Basic Architectural Overview">
+<META NAME="keywords" CONTENT="mailman-admin">
+<META NAME="resource-type" CONTENT="document">
+<META NAME="distribution" CONTENT="global">
+<title>2.4 Basic Architectural Overview</title>
+</head>
+<body>
+<DIV CLASS="navigation">
+<table align="center" width="100%" cellpadding="0" cellspacing="2">
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+<td align="center" width="100%">GNU Mailman - List Administration Manual</td>
+<td><a rel="contents" title="Table of Contents"
+ href="contents.html"><img src='contents.gif'
+ border='0' height='32' alt='Contents' width='32'></A></td>
+<td><img src='blank.gif'
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+<a class="sectref" rel="prev" HREF="node7.html">2.3 A List's Web</A>
+<b class="navlabel">Up:</b>
+<a class="sectref" rel="parent" HREF="node4.html">2 Introduction to GNU</A>
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+<br><hr>
+</DIV>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION002240000000000000000">
+2.4 Basic Architectural Overview</A>
+</H2>
+
+<P>
+This section will outline the basic architecture of GNU Mailman, such
+as how messages are processed by the sytem. Without going into lots
+of detail, this information will help you understand how the
+configuration options control Mailman's functionality.
+
+<P>
+When mail enters the system from your mail server, it is dropped into
+one of several Mailman <i>queues</i> depending on the address the
+message was sent to. For example, if your system has a mailing list
+named <var>mylist</var> and your domain is <var>example.com</var>, people can
+post messages to your list by sending them to
+<var>mylist@example.com</var>. These messages will be dropped into the
+<i>incoming</i> queue, which is also colloquially called the
+<i>moderate-and-munge</i> queue. The incoming queue is where most of
+the approval process occurs, and it's also where the message is
+prepared for sending out to the list membership.
+
+<P>
+There are separate queues for the built-in archiver, the bounce
+processor, the email command processor, as well as the outgoing email
+and news queues. There's also a queue for messages generated by the
+Mailman system. Each of these queues typically has one <i>queue
+runner</i> (or ``qrunner'') that processes messages in the queue. The
+qrunners are idle when there are no messages to process.
+
+<P>
+Every message in the queues are represented by two files, a message
+file and a metadata file. Both of these files share the same base
+name, which is a combination of a unique hash and the Unix time that
+the message was received. The metadata file has a suffix of
+<span class="file">.db</span> and the message file has a suffix of either <span class="file">.msg</span> if
+stored in plain text, or <span class="file">.pck</span> if stored in a more efficient
+internal representation<A NAME="tex2html1"
+ HREF="#foot41"><SUP>1</SUP></A>.
+
+<P>
+As a message moves through the incoming queue, it performs various
+checks on the message, such as whether it matches one of the
+moderation criteria, or contains disallowed MIME types. Once a
+message is approved for sending to the list membership, the message is
+prepared for sending by deleting, adding, or changing message headers,
+adding footers, etc. Messages in the incoming queue may also be
+stored for appending to digests.
+
+<P>
+<BR><HR><H4>Footnotes</H4>
+<DL>
+<DT><A NAME="foot41">... representation</A><A
+ HREF="node8.html#tex2html1"><SUP>1</SUP></A></DT>
+<DD>Specifically, a Python pickle
+
+</DD>
+</DL>
+<DIV CLASS="navigation">
+<p><hr>
+<table align="center" width="100%" cellpadding="0" cellspacing="2">
+<tr>
+<td><a rel="prev" title="2.3 A List's Web"
+ rel="prev" title="2.3 A List's Web"
+ HREF="node7.html"><img src='previous.gif'
+ border='0' height='32' alt='Previous Page' width='32'></A></td>
+<td><a rel="parent" title="2 Introduction to GNU"
+ rel="parent" title="2 Introduction to GNU"
+ HREF="node4.html"><img src='up.gif'
+ border='0' height='32' alt='Up One Level' width='32'></A></td>
+<td><a rel="next" title="3 The List Configuration"
+ rel="next" title="3 The List Configuration"
+ HREF="node9.html"><img src='next.gif'
+ border='0' height='32' alt='Next Page' width='32'></A></td>
+<td align="center" width="100%">GNU Mailman - List Administration Manual</td>
+<td><a rel="contents" title="Table of Contents"
+ rel="contents" title="Table of Contents"
+ href="contents.html"><img src='contents.gif'
+ border='0' height='32' alt='Contents' width='32'></A></td>
+<td><img src='blank.gif'
+ border='0' height='32' alt='' width='32'></td>
+</tr></table>
+<b class="navlabel">Previous:</b>
+<a class="sectref" rel="prev" HREF="node7.html">2.3 A List's Web</A>
+<b class="navlabel">Up:</b>
+<a class="sectref" rel="parent" HREF="node4.html">2 Introduction to GNU</A>
+<b class="navlabel">Next:</b>
+<a class="sectref" rel="next" HREF="node9.html">3 The List Configuration</A>
+<hr>
+<span class="release-info">Release 2.1, documentation updated on September 12, 2004.</span>
+</DIV>
+<!--End of Navigation Panel-->
+
+</BODY>
+</HTML>