Committing lots of documentation updates, including linking up to the new

mailman-installation guide, and filling out the other formats that seemed to be missing.
author: bwarsaw <> 2004-12-14 04:27:49 +0000
committer: bwarsaw <> 2004-12-14 04:27:49 +0000
commit: 7fd3afbe2480275fe41fa0169ed72abd1f425048 (patch)
tree: aa1f078e792f2f221b650b9ebb2749df42abb2e8 /admin/www/mailman-install/node26.html
parent: f7c56e34ea25695bafa11ed28e0384671a309ac3 (diff)
download: mailman2-7fd3afbe2480275fe41fa0169ed72abd1f425048.tar.gz
mailman2-7fd3afbe2480275fe41fa0169ed72abd1f425048.tar.xz
mailman2-7fd3afbe2480275fe41fa0169ed72abd1f425048.zip
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+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
+<html>
+<head>
+<link rel="STYLESHEET" href="mailman-install.css" type='text/css' />
+<link rel="first" href="mailman-install.html" title='GNU Mailman - Installation Manual' />
+<link rel='last' href='about.html' title='About this document...' />
+<link rel='help' href='about.html' title='About this document...' />
+<link rel="next" href="node27.html" />
+<link rel="prev" href="node25.html" />
+<link rel="parent" href="node16.html" />
+<link rel="next" href="node27.html" />
+<meta name='aesop' content='information' />
+<title>6.2.10 SMTP Callback</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="6.2.9 Receiver Verification"
+  href="node25.html"><img src='previous.png'
+  border='0' height='32'  alt='Previous Page' width='32' /></A></td>
+<td class='online-navigation'><a rel="parent" title="6.2 Using the Exim"
+  href="node16.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="6.2.11 Doing VERP with"
+  href="node27.html"><img src='next.png'
+  border='0' height='32'  alt='Next Page' width='32' /></A></td>
+<td align="center" width="100%">GNU Mailman - Installation Manual</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>
+<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="node25.html">6.2.9 Receiver Verification</A>
+<b class="navlabel">Up:</b>
+<a class="sectref" rel="parent" href="node16.html">6.2 Using the Exim</A>
+<b class="navlabel">Next:</b>
+<a class="sectref" rel="next" href="node27.html">6.2.11 Doing VERP with</A>
+</div>
+<hr /></div>
+</DIV>
+<!--End of Navigation Panel-->
+
+<H3><A NAME="SECTION0016210000000000000000">
+6.2.10 SMTP Callback</A>
+</H3>
+
+<P>
+Exim's SMTP callback feature is an even more powerful way to detect bogus
+sender addresses than normal sender verification.  Unfortunately, lots of
+servers send bounce messages with a bogus address in the header, and there are
+plenty that send bounces with bogus envelope senders (even though they're
+supposed to just use an empty envelope sender for bounces).
+
+<P>
+In order to ensure that Mailman can disable/remove bouncing addresses, you
+generally want to receive bounces for Mailman lists, even if those bounces are
+themselves not bounceable.  Thus, you might want to disable SMTP callback on
+bounce messages.
+
+<P>
+With Exim 4, you can accomplish this using something like the following in
+your <code>RCPT TO</code> ACL:
+
+<P>
+<div class="verbatim"><pre>
+  # Accept bounces to lists even if callbacks or other checks would fail
+  warn     message      = X-WhitelistedRCPT-nohdrfromcallback: Yes
+           condition    = \
+           ${if and {{match{$local_part}{(.*)-bounces\+.*}} \
+                     {exists {MAILMAN_HOME/lists/$1/config.pck}}} \
+                {yes}{no}}
+                {yes}{no}}
+
+  accept   condition    = \
+           ${if and {{match{$local_part}{(.*)-bounces\+.*}} \
+                     {exists {MAILMAN_HOME/lists/$1/config.pck}}} \
+                {yes}{no}}
+                {yes}{no}}
+
+  # Now, check sender address with SMTP callback.
+  deny   !verify = sender/callout=90s
+</pre></div>
+
+<P>
+If you also do SMTP callbacks on header addresses, you'll want something like
+this in your <code>DATA</code> ACL:
+
+<P>
+<div class="verbatim"><pre>
+  deny   !condition = $header_X-WhitelistedRCPT-nohdrfromcallback:
+         !verify = header_sender/callout=90s
+</pre></div>
+
+<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="6.2.9 Receiver Verification"
+  href="node25.html"><img src='previous.png'
+  border='0' height='32'  alt='Previous Page' width='32' /></A></td>
+<td class='online-navigation'><a rel="parent" title="6.2 Using the Exim"
+  href="node16.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="6.2.11 Doing VERP with"
+  href="node27.html"><img src='next.png'
+  border='0' height='32'  alt='Next Page' width='32' /></A></td>
+<td align="center" width="100%">GNU Mailman - Installation Manual</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>
+<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="node25.html">6.2.9 Receiver Verification</A>
+<b class="navlabel">Up:</b>
+<a class="sectref" rel="parent" href="node16.html">6.2 Using the Exim</A>
+<b class="navlabel">Next:</b>
+<a class="sectref" rel="next" href="node27.html">6.2.11 Doing VERP with</A>
+</div>
+</div>
+<hr />
+<span class="release-info">Release 2.1, documentation updated on December 13, 2004.</span>
+</DIV>
+<!--End of Navigation Panel-->
+
+</BODY>
+</HTML>
author	bwarsaw <>	2004-12-14 04:27:49 +0000
committer	bwarsaw <>	2004-12-14 04:27:49 +0000
commit	7fd3afbe2480275fe41fa0169ed72abd1f425048 (patch)
tree	aa1f078e792f2f221b650b9ebb2749df42abb2e8 /admin/www/mailman-install/node26.html
parent	f7c56e34ea25695bafa11ed28e0384671a309ac3 (diff)
download	mailman2-7fd3afbe2480275fe41fa0169ed72abd1f425048.tar.gz mailman2-7fd3afbe2480275fe41fa0169ed72abd1f425048.tar.xz mailman2-7fd3afbe2480275fe41fa0169ed72abd1f425048.zip