source: server/mail/dovecot.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
   "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
  <!ENTITY % general-entities SYSTEM "../../general.ent">
  %general-entities;

  <!ENTITY dovecot-download-http
  "https://www.dovecot.org/releases/&dovecot-major;.&dovecot-minor;/dovecot-&dovecot-version;.tar.gz">
  <!ENTITY dovecot-download-ftp  " ">
  <!ENTITY dovecot-md5sum        "8961c3dafd845a25fd55e7903ffc3755">
  <!ENTITY dovecot-size          "7.5 MB">
  <!ENTITY dovecot-buildsize     "237 MB">
  <!ENTITY dovecot-time          "4.8 SBU">
]>

<sect1 id="dovecot" xreflabel="Dovecot-&dovecot-version;">
  <?dbhtml filename="dovecot.html"?>


  <title>Dovecot-&dovecot-version;</title>

  <indexterm zone="dovecot">
    <primary sortas="a-Dovecot">Dovecot</primary>
  </indexterm>

  <sect2 role="package">
    <title>Introduction to Dovecot</title>

    <para>
      <application>Dovecot</application> is an Internet Message Access Protocol
      (IMAP) and Post Office Protocol (POP) server, written primarily with
      security in mind. <application>Dovecot</application> aims to be
      lightweight, fast and easy to set up as well as highly configurable and
      easily extensible with plugins.
    </para>

    &lfs121_checked;

    <bridgehead renderas="sect3">Package Information</bridgehead>
    <itemizedlist spacing="compact">
      <listitem>
        <para>
          Download (HTTP): <ulink url="&dovecot-download-http;"/>
        </para>
      </listitem>
      <listitem>
        <para>
          Download (FTP): <ulink url="&dovecot-download-ftp;"/>
        </para>
      </listitem>
      <listitem>
        <para>
          Download MD5 sum: &dovecot-md5sum;
        </para>
      </listitem>
      <listitem>
        <para>
          Download size: &dovecot-size;
        </para>
      </listitem>
      <listitem>
        <para>
          Estimated disk space required: &dovecot-buildsize;
        </para>
      </listitem>
      <listitem>
        <para>
          Estimated build time: &dovecot-time;
        </para>
      </listitem>
    </itemizedlist>

    <bridgehead renderas="sect3">Additional Downloads</bridgehead>
    <itemizedlist spacing="compact">
      <listitem>
        <para>
          Required patch:
          <ulink url="&patch-root;/dovecot-&dovecot-version;-openssl3_fixes-1.patch"/>
        </para>
      </listitem>
      <listitem>
        <para>
          Required patch:
          <ulink url="&patch-root;/dovecot-&dovecot-version;-security_fix-1.patch"/>
        </para>
      </listitem>
    </itemizedlist>

    <bridgehead renderas="sect3">Dovecot Dependencies</bridgehead>

    <bridgehead renderas="sect4">Required</bridgehead>
    <para role="required">
      <xref linkend="libtirpc"/>
    </para>

    <bridgehead renderas="sect4">Optional</bridgehead>
    <para role="optional">
      <xref linkend="clucene"/>,
      <xref linkend="icu"/>,
      <xref linkend="libcap-pam"/>,
      <xref linkend="libunwind"/>,
      <xref linkend="linux-pam"/>,
      <xref linkend="lua"/>,
      <xref linkend="mariadb"/> or <ulink url="https://www.mysql.com/">MySQL</ulink>,
      <xref linkend="openldap"/>,
      <xref linkend="postgresql"/>,
      <xref linkend="sqlite"/>,
      <xref linkend="valgrind"/>,
      <xref linkend="xfsprogs"/>,
      <ulink url="https://cassandra.apache.org/">Cassandra</ulink>,
      <ulink url="https://github.com/shibukawa/snowball_py">stemmer</ulink> and
      <ulink url="https://libsodium.gitbook.io/doc/">libsodium</ulink>
    </para>

  </sect2>

  <sect2 role="installation">
    <title>Installation of Dovecot</title>

    <para>
      There should be dedicated users and groups for unprivileged Dovecot
      processes and for processing users' logins. Issue the following commands
      as the <systemitem class="username">root</systemitem> user:
    </para>

<screen role="root"><userinput>groupadd -g 42 dovecot &amp;&amp;
useradd -c "Dovecot unprivileged user" -d /dev/null -u 42 \
        -g dovecot -s /bin/false dovecot &amp;&amp;
groupadd -g 43 dovenull &amp;&amp;
useradd -c "Dovecot login user" -d /dev/null -u 43 \
        -g dovenull -s /bin/false dovenull</userinput></screen>

    <para>
      First, apply a patch to fix problems with OpenSSL-3:
    </para>

<screen><userinput remap="pre">patch -Np1 -i ../dovecot-&dovecot-version;-openssl3_fixes-1.patch</userinput></screen>

    <para>
      Next, apply a patch to fix a security vulnerability:
    </para>

<screen><userinput remap="pre">patch -Np1 -i ../dovecot-&dovecot-version;-security_fix-1.patch</userinput></screen>

    <para>
      Install <application>Dovecot</application> by running the following
      commands:
    </para>

<screen revision="sysv"><userinput>CPPFLAGS="-I/usr/include/tirpc" \
LDFLAGS+=" -ltirpc" \
./configure --prefix=/usr                          \
            --sysconfdir=/etc                      \
            --localstatedir=/var                   \
            --with-systemd=no                      \
            --docdir=/usr/share/doc/dovecot-&dovecot-version; \
            --disable-static &amp;&amp;
make</userinput></screen>

<screen revision="systemd"><userinput>CPPFLAGS="-I/usr/include/tirpc" \
LDFLAGS+=" -ltirpc" \
./configure --prefix=/usr                          \
            --sysconfdir=/etc                      \
            --localstatedir=/var                   \
            --docdir=/usr/share/doc/dovecot-&dovecot-version; \
            --disable-static                       &amp;&amp;
make</userinput></screen>

    <para>
      To test the results, issue <command>make -k check</command>. <!-- An error
      may be reported if <xref linkend="valgrind"/> is present when running
      the test.-->
    </para>

    <para>
      Now, as the <systemitem class="username">root</systemitem> user:
    </para>

<screen role="root"><userinput>make install</userinput></screen>

  </sect2>

  <sect2 role="commands">
    <title>Command Explanations</title>

    <para>
      <command>CPPFLAGS=... LDFLAGS+=...</command>: build with libtirpc
      instead of the recently removed RPC code provided by GlibC.
    </para>

    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
      href="../../xincludes/static-libraries.xml"/>

    <!-- With merged-/usr, /usr/lib/systemd/system is set by default.
    <para revision="systemd">
      <parameter>- -with-systemdsystemunitdir=/lib/systemd/system</parameter>:
      This switch is used to set the correct installation directory for
      systemd units.
    </para>
    -->

    <para>
      <option>--with-ldap</option>: This switch enables
      <application>OpenLDAP</application> authentication support.
    </para>

    <para>
      <option>--with-pgsql</option>: This switch enables
      <application>PostgreSQL</application> database support.
    </para>

    <para>
      <option>--with-mysql</option>: This switch enables
      <application>MySQL</application> database support.
    </para>

    <para>
      <option>--with-sqlite</option>: This switch enables
      <application>SQLite</application> database support.
    </para>

    <para>
      <option>--with-lucene</option>: This switch enables
      <application>CLucene</application> full text search support.
    </para>

    <para>
      <option>--with-lua</option>: This switch enables
      <application>Lua</application> plugin support. This includes
      a mail and push notification plugin.
    </para>

<!--
    <para>
      <option>- -with-krb5</option>: This switch enables
      GSSAPI authentication support.
    </para>
-->
  </sect2>

  <sect2 role="configuration">
    <title>Configuring Dovecot</title>

    <sect3 id="dovecot-config">
      <title>Config Files</title>

      <para>
        <filename>/etc/dovecot/dovecot.conf</filename>,
        <filename>/etc/dovecot/conf.d/*</filename>, and
        <filename>/etc/dovecot/local.conf</filename>
      </para>

      <indexterm zone="dovecot dovecot-config">
        <primary sortas="e-etc-dovecot-dovecot.conf">/etc/dovecot/dovecot.conf</primary>
      </indexterm>
      <indexterm zone="dovecot dovecot-config">
        <primary sortas="e-etc-dovecot-conf.d">/etc/dovecot/conf.d/*</primary>
      </indexterm>
      <indexterm zone="dovecot dovecot-config">
        <primary sortas="e-etc-dovecot-local.conf">/etc/dovecot/local.conf</primary>
      </indexterm>

    </sect3>

    <sect3>
      <title>Configuration Information</title>

      <para>
        Copy an example configuration, which you can use as a starting point:
      </para>

<screen role="root"><userinput>cp -rv /usr/share/doc/dovecot-&dovecot-version;/example-config/* /etc/dovecot</userinput></screen>

      <para>
        The following configuration is a simple proof of concept with IMAP
        service using local users for authentication and mailbox location.
        Reading files from the <filename class="directory">conf.d</filename>
        directory is commented out since the included example configuration
        requires <application>OpenSSL</application> and
        <application>Linux PAM</application>.
      </para>

<screen role="root"><userinput>sed -i '/^\!include / s/^/#/' /etc/dovecot/dovecot.conf &amp;&amp;
chmod -v 1777 /var/mail &amp;&amp;
cat &gt; /etc/dovecot/local.conf &lt;&lt; "EOF"
<literal>protocols = imap
ssl = no
# The next line is only needed if you have no IPv6 network interfaces
listen = *
mail_location = mbox:~/Mail:INBOX=/var/mail/%u
userdb {
  driver = passwd
}
passdb {
  driver = shadow
}</literal>
EOF</userinput></screen>

      <para>
        You will definitely want to read the official documentation at <ulink
        url="https://wiki2.dovecot.org/"/> if you plan to use
        <application>Dovecot</application> in a production environment.
      </para>

    </sect3>

    <sect3 id="dovecot-init">
      <title><phrase revision="sysv">Boot Script</phrase>
             <phrase revision="systemd">Systemd Unit</phrase></title>

      <para revision="sysv">
        If you want the <application>Dovecot</application>
        server to start automatically when the system is booted, install the
        <filename>/etc/rc.d/init.d/dovecot</filename> init script included in
        the <xref linkend="bootscripts"/> package.
      </para>

      <para revision="systemd">
        To start the <command>dovecot</command>
        daemon at boot, enable the previously installed systemd unit with the
        following command:
      </para>

      <indexterm zone="dovecot dovecot-init">
        <primary sortas="f-dovecot">dovecot</primary>
      </indexterm>

<screen role="root" revision="sysv"><userinput>make install-dovecot</userinput></screen>

<screen role="root" revision="systemd"><userinput>systemctl enable dovecot</userinput></screen>

    </sect3>

  </sect2>

  <sect2 role="content">
    <title>Contents</title>

    <segmentedlist>
      <segtitle>Installed Programs</segtitle>
      <segtitle>Installed Libraries</segtitle>
      <segtitle>Installed Directories</segtitle>

      <seglistitem>
        <seg>
          doveadm, doveconf, dovecot, dovecot-sysreport, and dsync (symbolic link)
        </seg>
        <seg>
          various internal plugins in
          <filename class="directory">/usr/lib/dovecot</filename>
        </seg>
        <seg>
          /etc/dovecot,
          /usr/{include,lib,libexec,share}/dovecot and
          /usr/share/doc/dovecot-&dovecot-version;
        </seg>
      </seglistitem>
    </segmentedlist>

    <variablelist>
      <bridgehead renderas="sect3">Short Descriptions</bridgehead>
      <?dbfo list-presentation="list"?>
      <?dbhtml list-presentation="table"?>

      <varlistentry id="doveadm">
        <term><command>doveadm</command></term>
        <listitem>
          <para>
            is the <application>Dovecot</application> administration tool
          </para>
          <indexterm zone="dovecot doveadm">
            <primary sortas="b-doveadm">doveadm</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="doveconf">
        <term><command>doveconf</command></term>
        <listitem>
          <para>
            is <application>Dovecot</application>'s configuration dumping
            utility
          </para>
          <indexterm zone="dovecot doveconf">
            <primary sortas="b-doveconf">doveconf</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="dovecot-prog">
        <term><command>dovecot</command></term>
        <listitem>
          <para>
            is the IMAP and POP server
          </para>
          <indexterm zone="dovecot dovecot-prog">
            <primary sortas="b-dovecot">dovecot</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="dovecot-sysreport">
        <term><command>dovecot-sysreport</command></term>
        <listitem>
          <para>
            prints system information that is useful to the Dovecot developers
            when submitting bug reports upstream
          </para>
          <indexterm zone="dovecot dovecot-sysreport">
            <primary sortas="b-dovecot-sysreport">dovecot-sysreport</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="dsync">
        <term><command>dsync</command></term>
        <listitem>
          <para>
            is <application>Dovecot</application>'s mailbox synchronization
            utility
          </para>
          <indexterm zone="dovecot dsync">
            <primary sortas="b-dsync">dsync</primary>
          </indexterm>
        </listitem>
      </varlistentry>


    </variablelist>

  </sect2>

</sect1>