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<h2><a name="SECTION001630000000000000000">
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6.3 Using the Sendmail mail server</a>
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<div class="warning"><b class="label">Warning:</b>
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You may be tempted to set the <var>DELIVERY_MODULE</var> configuration variable in
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<span class="file">mm_cfg.py</span> to <code>'Sendmail'</code> when using the Sendmail mail server.
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<strong>Don't</strong>. The <span class="file">Sendmail.py</span> module is misnamed - it's really a
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command line based message handoff scheme as opposed to the SMTP scheme used
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in <span class="file">SMTPDirect.py</span> (the default). <span class="file">Sendmail.py</span> has known security
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holes and is provided as a proof-of-concept only<a name="tex2html4"
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href="#foot402"><sup>4</sup></a>. If you are having problems
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using <span class="file">SMTPDirect.py</span> fix those instead of using <span class="file">Sendmail.py</span>, or
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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="foot402">... only</a><A
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HREF="node31.html#tex2html4"><sup>4</sup></a></dt>
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versions of Mailman, this module is explicitly sabotaged. You have to know
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what you're doing in order to re-enable it.
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<li><a href="node32.html">6.3.1 Sendmail ``smrsh'' compatibility</a>
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<li><a href="node33.html">6.3.2 Integrating Sendmail and Mailman</a>
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<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 January 11, 2009.</span>
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