<!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...' /> <link rel="prev" href="node23.html" /> <link rel="parent" href="node20.html" /> <link rel="next" href="node25.html" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name='aesop' content='information' /> <title>2.7.4 Spam Filters</title> </head> <body> <div class="navigation"> <div id='top-navigation-panel' xml:id='top-navigation-panel'> <table align="center" width="100%" cellpadding="0" cellspacing="2"> <tr> <td class='online-navigation'><a rel="prev" title="2.7.3 recipient Filters" href="node23.html"><img src='previous.png' border='0' height='32' alt='Previous Page' width='32' /></a></td> <td class='online-navigation'><a rel="parent" title="2.7 the Privacy Options" href="node20.html"><img src='up.png' border='0' height='32' alt='Up one Level' width='32' /></a></td> <td class='online-navigation'><a rel="next" title="2.8 the Bounce Processing" href="node25.html"><img src='next.png' border='0' height='32' alt='Next Page' width='32' /></a></td> <td align="center" width="100%">GNU Mailman - List Administration Manual</td> <td class='online-navigation'><a rel="contents" title="Table of Contents" href="contents.html"><img src='contents.png' border='0' height='32' alt='Contents' width='32' /></a></td> <td class='online-navigation'><img src='blank.png' border='0' height='32' alt='' width='32' /></td> <td class='online-navigation'><img src='blank.png' border='0' height='32' alt='' width='32' /></td> </tr></table> <div class='online-navigation'> <b class="navlabel">Previous:</b> <a class="sectref" rel="prev" href="node23.html">2.7.3 Recipient Filters</a> <b class="navlabel">Up:</b> <a class="sectref" rel="parent" href="node20.html">2.7 The Privacy Options</a> <b class="navlabel">Next:</b> <a class="sectref" rel="next" href="node25.html">2.8 The Bounce Processing</a> </div> <hr /></div> </div> <!--End of Navigation Panel--> <h3><a name="SECTION002274000000000000000"> 2.7.4 Spam Filters</a> </h3> <p> This section provides some adjuncts to spam fighting tools; it doesn't replace dedicated anti-spam tools such as SpamAssassin or Spambayes. <p> <dl> <dt><strong>bounce_matching_headers</strong></dt> <dd>This variable contains header regular expressions, one per line, and if any of a message's headers matches one of these patterns, it will be held for moderation. The format is a colon separated header and value, where the header is case insensitive and the value is any valid Python regular expression. Lines that start with # are ignored. <p> This variable can be used to catch known spammers by writing regexps that match against <span class="mailheader">To:</span> or <span class="mailheader">Cc:</span> lines, or known-bad <span class="mailheader">Message-ID:</span>s. Perhaps more useful though are patterns that match headers added by spam detection tools higher up in the tool chain. For example, you might configure SpamAssassin to add an <span class="mailheader">X-Spam-Score:</span> header with between zero and 5 stars depending on the spam score. Then you can add a line to this variable like: <p> <div class="verbatim"><pre> X-Spam-Score: [*]{3,5} </pre></div> <p> This line will match from 3 to 5 stars in the value of this field. </dd> </dl> <p> <div class="navigation"> <div class='online-navigation'> <p></p><hr /> <table align="center" width="100%" cellpadding="0" cellspacing="2"> <tr> <td class='online-navigation'><a rel="prev" title="2.7.3 recipient Filters" href="node23.html"><img src='previous.png' border='0' height='32' alt='Previous Page' width='32' /></a></td> <td class='online-navigation'><a rel="parent" title="2.7 the Privacy Options" href="node20.html"><img src='up.png' border='0' height='32' alt='Up one Level' width='32' /></a></td> <td class='online-navigation'><a rel="next" title="2.8 the Bounce Processing" href="node25.html"><img src='next.png' border='0' height='32' alt='Next Page' width='32' /></a></td> <td align="center" width="100%">GNU Mailman - List Administration Manual</td> <td class='online-navigation'><a rel="contents" title="Table of Contents" href="contents.html"><img src='contents.png' border='0' height='32' alt='Contents' width='32' /></a></td> <td class='online-navigation'><img src='blank.png' border='0' height='32' alt='' width='32' /></td> <td class='online-navigation'><img src='blank.png' border='0' height='32' alt='' width='32' /></td> </tr></table> <div class='online-navigation'> <b class="navlabel">Previous:</b> <a class="sectref" rel="prev" href="node23.html">2.7.3 Recipient Filters</a> <b class="navlabel">Up:</b> <a class="sectref" rel="parent" href="node20.html">2.7 The Privacy Options</a> <b class="navlabel">Next:</b> <a class="sectref" rel="next" href="node25.html">2.8 The Bounce Processing</a> </div> </div> <hr /> <span class="release-info">Release 2.1, documentation updated on December 14, 2009.</span> </div> <!--End of Navigation Panel--> </body> </html>