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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta name="generator" content="HTML Tidy, see www.w3.org" /><title>Electronic Mail</title><meta name="GENERATOR" content="Modular DocBook HTML Stylesheet Version 1.7" /><link rel="HOME" title="FreeBSD Handbook" href="index.html" /><link rel="UP" title="Network Communication" href="network-communication.html" /><link rel="PREVIOUS" title="Using SLIP" href="slip.html" /><link rel="NEXT" title="Using Electronic Mail" href="mail-using.html" /><link rel="STYLESHEET" type="text/css" href="docbook.css" /></head><body class="CHAPTER" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#840084"alink="#0000FF"><div class="NAVHEADER"><table summary="Header navigation table" width="100%" border="0" cellpadding="0"cellspacing="0"><tr><th colspan="3" align="center">FreeBSD Handbook</th></tr><tr><td width="10%" align="left" valign="bottom"><a href="slip.html"accesskey="P">Prev</a></td><td width="80%" align="center" valign="bottom"></td><td width="10%" align="right" valign="bottom"><a href="mail-using.html"accesskey="N">Next</a></td></tr></table><hr align="LEFT" width="100%" /></div><div class="CHAPTER"><h1><a id="MAIL" name="MAIL"></a>Chapter 22 Electronic Mail</h1><div class="TOC"><dl><dt><b>Table of Contents</b></dt><dt>22.1 <a href="mail.html#MAIL-SYNOPSIS">Synopsis</a></dt><dt>22.2 <a href="mail-using.html">Using Electronic Mail</a></dt><dt>22.3 <a href="sendmail.html"><b class="APPLICATION">sendmail</b>Configuration</a></dt><dt>22.4 <a href="mail-changingmta.html">Changing Your Mail Transfer Agent</a></dt><dt>22.5 <a href="mail-trouble.html">Troubleshooting</a></dt><dt>22.6 <a href="mail-advanced.html">Advanced Topics</a></dt><dt>22.7 <a href="smtp-uucp.html">SMTP with UUCP</a></dt><dt>22.8 <a href="outgoing-only.html">Setting Up to Send Only</a></dt><dt>22.9 <a href="smtp-dialup.html">Using Mail with a Dialup Connection</a></dt><dt>22.10 <a href="smtp-auth.html">SMTP Authentication</a></dt><dt>22.11 <a href="mail-agents.html">Mail User Agents</a></dt><dt>22.12 <a href="mail-fetchmail.html">Using fetchmail</a></dt><dt>22.13 <a href="mail-procmail.html">Using procmail</a></dt></dl></div><i class="AUTHORGROUP"><span class="CONTRIB">Original work by</span> Bill Lloyd.</i> <iclass="AUTHORGROUP"><span class="CONTRIB">Rewritten by</span> Jim Mock.</i> <div class="SECT1"><h1 class="SECT1"><a id="MAIL-SYNOPSIS" name="MAIL-SYNOPSIS">22.1 Synopsis</a></h1><p>``Electronic Mail'', better known as email, is one of the most widely used forms ofcommunication today. This chapter provides a basic introduction to running a mail serveron FreeBSD, as well as an introduction to sending and receiving email using FreeBSD;however, it is not a complete reference and in fact many important considerations areomitted. For more complete coverage of the subject, the reader is referred to the manyexcellent books listed in <a href="bibliography.html">Appendix B</a>.</p><p>After reading this chapter, you will know:</p><ul><li><p>What software components are involved in sending and receiving electronic mail.</p></li><li><p>Where basic <b class="APPLICATION">sendmail</b> configuration files are located inFreeBSD.</p></li><li><p>The difference between remote and local mailboxes.</p></li><li><p>How to block spammers from illegally using your mail server as a relay.</p></li><li><p>How to install and configure an alternate Mail Transfer Agent on your system,replacing <b class="APPLICATION">sendmail</b>.</p></li><li><p>How to troubleshoot common mail server problems.</p></li><li><p>How to use SMTP with UUCP.</p></li><li><p>How to set up the system to send mail only.</p></li><li><p>How to use mail with a dialup connection.</p></li><li><p>How to configure SMTP Authentication for added security.</p></li><li><p>How to install and use a Mail User Agent, such as <b class="APPLICATION">mutt</b> tosend and receive email.</p></li><li><p>How to download your mail from a remote <acronym class="ACRONYM">POP</acronym> or<acronym class="ACRONYM">IMAP</acronym> server.</p></li><li><p>How to automatically apply filters and rules to incoming email.</p></li></ul><p>Before reading this chapter, you should:</p><ul><li><p>Properly set up your network connection (<a href="advanced-networking.html">Chapter24</a>).</p></li><li><p>Properly set up the DNS information for your mail host (<ahref="network-servers.html">Chapter 23</a>).</p></li><li><p>Know how to install additional third-party software (<a href="ports.html">Chapter4</a>).</p></li></ul></div></div><div class="NAVFOOTER"><hr align="LEFT" width="100%" /><table summary="Footer navigation table" width="100%" border="0" cellpadding="0"cellspacing="0"><tr><td width="33%" align="left" valign="top"><a href="slip.html" accesskey="P">Prev</a></td><td width="34%" align="center" valign="top"><a href="index.html"accesskey="H">Home</a></td><td width="33%" align="right" valign="top"><a href="mail-using.html"accesskey="N">Next</a></td></tr><tr><td width="33%" align="left" valign="top">Using SLIP</td><td width="34%" align="center" valign="top"><a href="network-communication.html"accesskey="U">Up</a></td><td width="33%" align="right" valign="top">Using Electronic Mail</td></tr></table></div><p align="center"><small>This, and other documents, can be downloaded from <ahref="ftp://ftp.FreeBSD.org/pub/FreeBSD/doc/">ftp://ftp.FreeBSD.org/pub/FreeBSD/doc/</a>.</small></p><p align="center"><small>For questions about FreeBSD, read the <ahref="http://www.FreeBSD.org/docs.html">documentation</a> before contacting <<ahref="mailto:questions@FreeBSD.org">questions@FreeBSD.org</a>>.<br />For questions about this documentation, e-mail <<ahref="mailto:doc@FreeBSD.org">doc@FreeBSD.org</a>>.</small></p></body></html>⌨️ 快捷键说明
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