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<div class="section" id="module-smtpd">
<span id="smtpd-smtp-server"></span><h1>20.13. <a class="reference internal" href="#module-smtpd" title="smtpd: A SMTP server implementation in Python."><code class="xref py py-mod docutils literal notranslate"><span class="pre">smtpd</span></code></a> — SMTP Server<a class="headerlink" href="#module-smtpd" title="Permalink to this headline">¶</a></h1>
<p><strong>Source code:</strong> <a class="reference external" href="https://github.com/python/cpython/tree/2.7/Lib/smtpd.py">Lib/smtpd.py</a></p>
<hr class="docutils" />
<p>This module offers several classes to implement SMTP servers. One is a generic
do-nothing implementation, which can be overridden, while the other two offer
specific mail-sending strategies.</p>
<div class="section" id="smtpserver-objects">
<h2>20.13.1. SMTPServer Objects<a class="headerlink" href="#smtpserver-objects" title="Permalink to this headline">¶</a></h2>
<dl class="class">
<dt id="smtpd.SMTPServer">
<em class="property">class </em><code class="descclassname">smtpd.</code><code class="descname">SMTPServer</code><span class="sig-paren">(</span><em>localaddr</em>, <em>remoteaddr</em><span class="sig-paren">)</span><a class="headerlink" href="#smtpd.SMTPServer" title="Permalink to this definition">¶</a></dt>
<dd><p>Create a new <a class="reference internal" href="#smtpd.SMTPServer" title="smtpd.SMTPServer"><code class="xref py py-class docutils literal notranslate"><span class="pre">SMTPServer</span></code></a> object, which binds to local address
<em>localaddr</em>. It will treat <em>remoteaddr</em> as an upstream SMTP relayer. Both
<em>localaddr</em> and <em>remoteaddr</em> should be a <a class="reference internal" href="socket.html#host-port"><span class="std std-ref">(host, port)</span></a>
tuple. The object inherits from <a class="reference internal" href="asyncore.html#asyncore.dispatcher" title="asyncore.dispatcher"><code class="xref py py-class docutils literal notranslate"><span class="pre">asyncore.dispatcher</span></code></a>, and so will
insert itself into <a class="reference internal" href="asyncore.html#module-asyncore" title="asyncore: A base class for developing asynchronous socket handling services."><code class="xref py py-mod docutils literal notranslate"><span class="pre">asyncore</span></code></a>’s event loop on instantiation.</p>
<dl class="method">
<dt id="smtpd.SMTPServer.process_message">
<code class="descname">process_message</code><span class="sig-paren">(</span><em>peer</em>, <em>mailfrom</em>, <em>rcpttos</em>, <em>data</em><span class="sig-paren">)</span><a class="headerlink" href="#smtpd.SMTPServer.process_message" title="Permalink to this definition">¶</a></dt>
<dd><p>Raise <a class="reference internal" href="exceptions.html#exceptions.NotImplementedError" title="exceptions.NotImplementedError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">NotImplementedError</span></code></a> exception. Override this in subclasses to
do something useful with this message. Whatever was passed in the
constructor as <em>remoteaddr</em> will be available as the <code class="xref py py-attr docutils literal notranslate"><span class="pre">_remoteaddr</span></code>
attribute. <em>peer</em> is the remote host’s address, <em>mailfrom</em> is the envelope
originator, <em>rcpttos</em> are the envelope recipients and <em>data</em> is a string
containing the contents of the e-mail (which should be in <span class="target" id="index-0"></span><a class="rfc reference external" href="https://tools.ietf.org/html/rfc2822.html"><strong>RFC 2822</strong></a>
format).</p>
</dd></dl>
</dd></dl>
</div>
<div class="section" id="debuggingserver-objects">
<h2>20.13.2. DebuggingServer Objects<a class="headerlink" href="#debuggingserver-objects" title="Permalink to this headline">¶</a></h2>
<dl class="class">
<dt id="smtpd.DebuggingServer">
<em class="property">class </em><code class="descclassname">smtpd.</code><code class="descname">DebuggingServer</code><span class="sig-paren">(</span><em>localaddr</em>, <em>remoteaddr</em><span class="sig-paren">)</span><a class="headerlink" href="#smtpd.DebuggingServer" title="Permalink to this definition">¶</a></dt>
<dd><p>Create a new debugging server. Arguments are as per <a class="reference internal" href="#smtpd.SMTPServer" title="smtpd.SMTPServer"><code class="xref py py-class docutils literal notranslate"><span class="pre">SMTPServer</span></code></a>.
Messages will be discarded, and printed on stdout.</p>
</dd></dl>
</div>
<div class="section" id="pureproxy-objects">
<h2>20.13.3. PureProxy Objects<a class="headerlink" href="#pureproxy-objects" title="Permalink to this headline">¶</a></h2>
<dl class="class">
<dt id="smtpd.PureProxy">
<em class="property">class </em><code class="descclassname">smtpd.</code><code class="descname">PureProxy</code><span class="sig-paren">(</span><em>localaddr</em>, <em>remoteaddr</em><span class="sig-paren">)</span><a class="headerlink" href="#smtpd.PureProxy" title="Permalink to this definition">¶</a></dt>
<dd><p>Create a new pure proxy server. Arguments are as per <a class="reference internal" href="#smtpd.SMTPServer" title="smtpd.SMTPServer"><code class="xref py py-class docutils literal notranslate"><span class="pre">SMTPServer</span></code></a>.
Everything will be relayed to <em>remoteaddr</em>. Note that running this has a good
chance to make you into an open relay, so please be careful.</p>
</dd></dl>
</div>
<div class="section" id="mailmanproxy-objects">
<h2>20.13.4. MailmanProxy Objects<a class="headerlink" href="#mailmanproxy-objects" title="Permalink to this headline">¶</a></h2>
<dl class="class">
<dt id="smtpd.MailmanProxy">
<em class="property">class </em><code class="descclassname">smtpd.</code><code class="descname">MailmanProxy</code><span class="sig-paren">(</span><em>localaddr</em>, <em>remoteaddr</em><span class="sig-paren">)</span><a class="headerlink" href="#smtpd.MailmanProxy" title="Permalink to this definition">¶</a></dt>
<dd><p>Create a new pure proxy server. Arguments are as per <a class="reference internal" href="#smtpd.SMTPServer" title="smtpd.SMTPServer"><code class="xref py py-class docutils literal notranslate"><span class="pre">SMTPServer</span></code></a>.
Everything will be relayed to <em>remoteaddr</em>, unless local mailman configurations
knows about an address, in which case it will be handled via mailman. Note that
running this has a good chance to make you into an open relay, so please be
careful.</p>
</dd></dl>
</div>
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<h3><a href="../contents.html">Table of Contents</a></h3>
<ul>
<li><a class="reference internal" href="#">20.13. <code class="xref py py-mod docutils literal notranslate"><span class="pre">smtpd</span></code> — SMTP Server</a><ul>
<li><a class="reference internal" href="#smtpserver-objects">20.13.1. SMTPServer Objects</a></li>
<li><a class="reference internal" href="#debuggingserver-objects">20.13.2. DebuggingServer Objects</a></li>
<li><a class="reference internal" href="#pureproxy-objects">20.13.3. PureProxy Objects</a></li>
<li><a class="reference internal" href="#mailmanproxy-objects">20.13.4. MailmanProxy Objects</a></li>
</ul>
</li>
</ul>
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