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+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>_smtpd - UnderSMTPD, the underscore SMTP daemon</title>
+<link rev="made" href="mailto:root@localhost" />
+</head>
+
+<body style="background-color: white">
+
+<p><a name="__index__"></a></p>
+<!-- INDEX BEGIN -->
+
+<ul>
+
+ <li><a href="#name">NAME</a></li>
+ <li><a href="#synopsis">SYNOPSIS</a></li>
+ <li><a href="#description">DESCRIPTION</a></li>
+ <li><a href="#options">OPTIONS</a></li>
+ <li><a href="#aliases_format">ALIASES FORMAT</a></li>
+ <li><a href="#rt_aliases_example">RT ALIASES EXAMPLE</a></li>
+ <li><a href="#bugs">BUGS</a></li>
+ <li><a href="#author">AUTHOR</a></li>
+ <li><a href="#see_also">SEE ALSO</a></li>
+</ul>
+<!-- INDEX END -->
+
+<hr />
+<p>
+</p>
+<h1><a name="name">NAME</a></h1>
+<p>_smtpd - UnderSMTPD, the underscore SMTP daemon</p>
+<p>
+</p>
+<hr />
+<h1><a name="synopsis">SYNOPSIS</a></h1>
+<pre>
+ #make some aliases
+ echo 'username: "|someprogram and args" > /etc/aliases</pre>
+<pre>
+ #inetd setup
+ echo "smtp stream tcp nowait mail /usr/local/bin/_smtpd" >>/etc/inetd.conf
+ echo "_smtpd: my.mail.server.ip" >>/etc/hosts.allow
+ echo "_smtpd: ALL" >>/etc/hosts.deny</pre>
+<pre>
+ #or add an smtp file to /etc/xinetd.d/
+ service smtp
+ {
+ socket_type = stream
+ protocol = tcp
+ wait = no
+ user = mail
+ server = /usr/local/bin/_smtpd
+ }</pre>
+<p>
+</p>
+<hr />
+<h1><a name="description">DESCRIPTION</a></h1>
+<p>This is a minimal SMTP server which only forwards mail to pipe destinations
+in /etc/aliases. It does nothing else. Its intended function is on an
+internal mail server that forwards mail to other programs on a per address
+basis.</p>
+<p>UnderSMTPD reads /etc/aliases for usernames; if a match is identified
+the message is piped to the given program. Any problems executing the program
+will cause a temporary SMTP error to be returned to the connecting client.</p>
+<p>Other kinds of aliases are not recognized and cause a perminant SMTP error
+to be returned to the connecting client, as do usernames not found in
+/etc/aliases</p>
+<p>UnderSMTP was originally written to be used with the Request Tracker ticketing
+system.</p>
+<p>UnderSMTP uses Net::SMTP::Mail to do all the hard work.</p>
+<p>
+</p>
+<hr />
+<h1><a name="options">OPTIONS</a></h1>
+<dl>
+<dt><strong><a name="item__2da_filename_3a_alternate_aliases_file">-a filename: Alternate aliases file</a></strong><br />
+</dt>
+</dl>
+<p>
+</p>
+<hr />
+<h1><a name="aliases_format">ALIASES FORMAT</a></h1>
+<pre>
+ username: |program and args
+ username: "|program and args"</pre>
+<p>Quotes are not necessary around the pipe symbol, program and arguments but are
+stripped if present. Line continuations are not supported.</p>
+<p>
+</p>
+<hr />
+<h1><a name="rt_aliases_example">RT ALIASES EXAMPLE</a></h1>
+<pre>
+ support: |/opt/rt3/bin/rt-mailgate --queue support --action correspond --url <a href="http://rt.example.com/">http://rt.example.com/</a>
+ billing: |/opt/rt3/bin/rt-mailgate --queue billing --action correspond --url <a href="http://rt.example.com/">http://rt.example.com/</a></pre>
+<p>
+</p>
+<hr />
+<h1><a name="bugs">BUGS</a></h1>
+<p>Yes.</p>
+<p>
+</p>
+<hr />
+<h1><a name="author">AUTHOR</a></h1>
+<p>Ivan Kohler <<a href="mailto:ivan-undersmtpd@420.am">ivan-undersmtpd@420.am</a>></p>
+<p>
+</p>
+<hr />
+<h1><a name="see_also">SEE ALSO</a></h1>
+<p><a href="/Net/SMTP/Mail.html">the Net::SMTP::Mail manpage</a></p>
+
+</body>
+
+</html>
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