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<H2><A NAME="SECTION001630000000000000000">
6.3 Using the Sendmail mail server</A>
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<P>
<div class="warning"><b class="label">Warning:</b>

You may be tempted to set the <var>DELIVERY_MODULE</var> configuration variable in
<span class="file">mm_cfg.py</span> to <code>'Sendmail'</code> when using the Sendmail mail server.
<strong>Don't</strong>.  The <span class="file">Sendmail.py</span> module is misnamed - it's really a
command line based message handoff scheme as opposed to the SMTP scheme used
in <span class="file">SMTPDirect.py</span> (the default).  <span class="file">Sendmail.py</span> has known security
holes and is provided as a proof-of-concept only<A NAME="tex2html4"
  HREF="#foot393"><SUP>4</SUP></A>.  If you are having problems
using <span class="file">SMTPDirect.py</span> fix those instead of using <span class="file">Sendmail.py</span>, or
you may open your system up to security exploits.
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<BR><HR><H4>Footnotes</H4>
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<DT><A NAME="foot393">... only</A><A
 HREF="node31.html#tex2html4"><SUP>4</SUP></A></DT>
<DD>In fact, in later
versions of Mailman, this module is explicitly sabotaged.  You have to know
what you're doing in order to re-enable it.

</DD>
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<LI><A href="node32.html">6.3.1 Sendmail ``smrsh'' compatibility</a>
<LI><A href="node33.html">6.3.2 Integrating Sendmail and Mailman</a>
<LI><A href="node34.html">6.3.3 Performance notes</a>
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<span class="release-info">Release 2.1, documentation updated on December 22, 2004.</span>
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