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<meta name="description" content="A fullstack but simple mail-server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) using Docker.">
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<meta charset="utf-8">
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<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<meta name="description" content="A fullstack but simple mail-server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) using Docker.">
<meta name="description" content="A fullstack but simple mail-server (SMTP, IMAP, LDAP, Anti-spam, Anti-virus, etc.) using Docker.">
<meta name="author" content="docker-mailserver (Github Organization)">
@ -1978,7 +1978,7 @@
<li><strong>ldap-aliases.cf:</strong> Configuration for the virtual alias mapping <code>virtual_alias_maps</code>. See the <a href="https://github.com/docker-mailserver/docker-mailserver/blob/941e7acdaebe271eaf3d296b36d4d81df4c54b90/target/scripts/startup/setup-stack.sh#L411"><code>setup-stack.sh</code></a> script.</li>
<li><strong>ldap-domains.cf:</strong> Configuration for the virtual domain mapping <code>virtual_mailbox_domains</code>. See the <a href="https://github.com/docker-mailserver/docker-mailserver/blob/941e7acdaebe271eaf3d296b36d4d81df4c54b90/target/scripts/startup/setup-stack.sh#L411"><code>setup-stack.sh</code></a> script.</li>
<li><strong>whitelist_clients.local:</strong> Whitelisted domains, not considered by postgrey. Enter one host or domain per line.</li>
<li><strong>spamassassin-rules.cf:</strong> Antispam rules for Spamassassin. (Docs: <a href="../../../faq/#how-can-i-manage-my-custom-spamassassin-rules">FAQ - SpamAssassin Rules</a>)</li>
<li><strong>spamassassin-rules.cf:</strong> Anti-spam rules for Spamassassin. (Docs: <a href="../../../faq/#how-can-i-manage-my-custom-spamassassin-rules">FAQ - SpamAssassin Rules</a>)</li>
<li><strong>fail2ban-fail2ban.cf:</strong> Additional config options for <code>fail2ban.cf</code>. (Docs: <a href="../../security/fail2ban/">Fail2Ban</a>)</li>
<li><strong>fail2ban-jail.cf:</strong> Additional config options for fail2ban's jail behaviour. (Docs: <a href="../../security/fail2ban/">Fail2Ban</a>)</li>
<li><strong>amavis.cf:</strong> replaces the <code>/etc/amavis/conf.d/50-user</code> file</li>

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<meta name="author" content="docker-mailserver (Github Organization)">
@ -1038,15 +1038,15 @@
</li>
<li class="md-nav__item">
<a href="#spamassassin_spam_to_inbox" class="md-nav__link">
SPAMASSASSIN_SPAM_TO_INBOX
<a href="#enable_spamassassin_kam" class="md-nav__link">
ENABLE_SPAMASSASSIN_KAM
</a>
</li>
<li class="md-nav__item">
<a href="#enable_spamassassin_kam" class="md-nav__link">
ENABLE_SPAMASSASSIN_KAM
<a href="#spamassassin_spam_to_inbox" class="md-nav__link">
SPAMASSASSIN_SPAM_TO_INBOX
</a>
</li>
@ -3390,15 +3390,15 @@
</li>
<li class="md-nav__item">
<a href="#spamassassin_spam_to_inbox" class="md-nav__link">
SPAMASSASSIN_SPAM_TO_INBOX
<a href="#enable_spamassassin_kam" class="md-nav__link">
ENABLE_SPAMASSASSIN_KAM
</a>
</li>
<li class="md-nav__item">
<a href="#enable_spamassassin_kam" class="md-nav__link">
ENABLE_SPAMASSASSIN_KAM
<a href="#spamassassin_spam_to_inbox" class="md-nav__link">
SPAMASSASSIN_SPAM_TO_INBOX
</a>
</li>
@ -4257,29 +4257,33 @@ ClamAV must be enabled (ENABLE_CLAMAV=1) for this.</p>
</ul>
<p>Note: More information at <a href="https://dovecot.org/doc/dovecot-example.conf">https://dovecot.org/doc/dovecot-example.conf</a></p>
<h5 id="move_spam_to_junk"><a class="toclink" href="#move_spam_to_junk">MOVE_SPAM_TO_JUNK</a></h5>
<p>When enabled, e-mails marked with the</p>
<ol>
<li><code>X-Spam: Yes</code> header added by Rspamd</li>
<li><code>X-Spam-Flag: YES</code> header added by SpamAssassin (requires <a href="#spamassassin_spam_to_inbox"><code>SPAMASSASSIN_SPAM_TO_INBOX=1</code></a>)</li>
</ol>
<p>will be automatically moved to the Junk folder (with the help of a Sieve script).</p>
<ul>
<li>0 =&gt; Spam messages will be delivered in the mailbox.</li>
<li><strong>1</strong> =&gt; Spam messages will be delivered in the <code>Junk</code> folder.</li>
</ul>
<h5 id="mark_spam_as_read"><a class="toclink" href="#mark_spam_as_read">MARK_SPAM_AS_READ</a></h5>
<p>Enable to treat received spam as "read" (<em>avoids notification to MUA client of new mail</em>).</p>
<p>Routes mail identified as spam into the recipient(s) Junk folder (<em>via a Dovecot Sieve script</em>).</p>
<div class="admonition info">
<p class="admonition-title">Info</p>
<p>Mail is received as spam when it has been marked with either header:</p>
<ol>
<li><code>X-Spam: Yes</code> (<em>by Rspamd</em>)</li>
<li>
<p><code>X-Spam-Flag: YES</code> (<em>by SpamAssassin - requires <a href="#spamassassin_spam_to_inbox"><code>SPAMASSASSIN_SPAM_TO_INBOX=1</code></a></em>)</p>
</li>
<li>
<p><strong>0</strong> =&gt; disabled</p>
</li>
<ul>
<li><code>X-Spam: Yes</code> (<em>added by Rspamd</em>)</li>
<li><code>X-Spam-Flag: YES</code> (<em>added by SpamAssassin - requires <a href="#spamassassin_spam_to_inbox"><code>SPAMASSASSIN_SPAM_TO_INBOX=1</code></a></em>)</li>
</ul>
</div>
<h5 id="mark_spam_as_read"><a class="toclink" href="#mark_spam_as_read">MARK_SPAM_AS_READ</a></h5>
<ul>
<li><strong>0</strong> =&gt; disabled</li>
<li>1 =&gt; Spam messages will be marked as read</li>
</ol>
</ul>
<p>Enable to treat received spam as "read" (<em>avoids notification to MUA client of new mail</em>).</p>
<div class="admonition info">
<p class="admonition-title">Info</p>
<p>Mail is received as spam when it has been marked with either header:</p>
<ul>
<li><code>X-Spam: Yes</code> (<em>added by Rspamd</em>)</li>
<li><code>X-Spam-Flag: YES</code> (<em>added by SpamAssassin - requires <a href="#spamassassin_spam_to_inbox"><code>SPAMASSASSIN_SPAM_TO_INBOX=1</code></a></em>)</li>
</ul>
</div>
<h4 id="rspamd"><a class="toclink" href="#rspamd">Rspamd</a></h4>
<h5 id="enable_rspamd"><a class="toclink" href="#enable_rspamd">ENABLE_RSPAMD</a></h5>
<p>Enable or disable <a href="../security/rspamd/">Rspamd</a>.</p>
@ -4421,54 +4425,159 @@ If this is not set and reports are enabled with the old options, logrotate will
<li><strong>0</strong> =&gt; SpamAssassin is disabled</li>
<li>1 =&gt; SpamAssassin is enabled</li>
</ul>
<h5 id="spamassassin_spam_to_inbox"><a class="toclink" href="#spamassassin_spam_to_inbox">SPAMASSASSIN_SPAM_TO_INBOX</a></h5>
<ul>
<li>0 =&gt; Spam messages will be bounced (<em>rejected</em>) without any notification (<em>dangerous</em>).</li>
<li><strong>1</strong> =&gt; Spam messages will be delivered to the inbox and tagged as spam using <code>SA_SPAM_SUBJECT</code>.</li>
</ul>
<details class="info">
<summary>SpamAssassin analyzes incoming mail and assigns a spam score</summary>
<p>Integration with Amavis involves processing mail based on the assigned spam score via <a href="https://www.ijs.si/software/amavisd/amavisd-new-docs.html#tagkill"><code>SA_TAG</code>, <code>SA_TAG2</code> and <code>SA_KILL</code></a>.</p>
<p>These settings have equivalent ENV supported by DMS for easy adjustments, as documented below.</p>
</details>
<h5 id="enable_spamassassin_kam"><a class="toclink" href="#enable_spamassassin_kam">ENABLE_SPAMASSASSIN_KAM</a></h5>
<p><a href="https://mcgrail.com/template/projects#KAM1">KAM</a> is a 3rd party SpamAssassin ruleset, provided by the McGrail Foundation. If SpamAssassin is enabled, KAM can be used in addition to the default ruleset.</p>
<ul>
<li><strong>0</strong> =&gt; KAM disabled</li>
<li>1 =&gt; KAM enabled</li>
</ul>
<h5 id="sa_tag"><a class="toclink" href="#sa_tag">SA_TAG</a></h5>
<p><a href="https://mcgrail.com/template/projects#KAM1">KAM</a> is a 3rd party SpamAssassin ruleset, provided by the McGrail Foundation. If SpamAssassin is enabled, KAM can be used in addition to the default ruleset.</p>
<h5 id="spamassassin_spam_to_inbox"><a class="toclink" href="#spamassassin_spam_to_inbox">SPAMASSASSIN_SPAM_TO_INBOX</a></h5>
<ul>
<li><strong>2.0</strong> =&gt; add spam info headers if at, or above that level</li>
</ul>
<p>Note: this SpamAssassin setting needs <code>ENABLE_SPAMASSASSIN=1</code></p>
<h5 id="sa_tag2"><a class="toclink" href="#sa_tag2">SA_TAG2</a></h5>
<ul>
<li><strong>6.31</strong> =&gt; add 'spam detected' headers at that level</li>
</ul>
<p>Note: this SpamAssassin setting needs <code>ENABLE_SPAMASSASSIN=1</code></p>
<h5 id="sa_kill"><a class="toclink" href="#sa_kill">SA_KILL</a></h5>
<ul>
<li><strong>10.0</strong> =&gt; triggers spam evasive actions</li>
<li>0 =&gt; (<em>Amavis action: <code>D_BOUNCE</code></em>): Spam messages will be bounced (<em>rejected</em>) without any notification (<em>dangerous</em>).</li>
<li><strong>1</strong> =&gt; (<em>Amavis action: <code>D_PASS</code></em>): Spam messages will be delivered to the inbox.</li>
</ul>
<div class="admonition note">
<p class="admonition-title">This SpamAssassin setting needs <code>ENABLE_SPAMASSASSIN=1</code></p>
<p>By default, DMS is configured to quarantine spam emails.</p>
<p>If emails are quarantined, they are compressed and stored in a location dependent on the <code>ONE_DIR</code> setting above. To inhibit this behaviour and deliver spam emails, set this to a very high value e.g. <code>100.0</code>.</p>
<p>If <code>ONE_DIR=1</code> (default) the location is <code>/var/mail-state/lib-amavis/virusmails/</code>, or if <code>ONE_DIR=0</code>: <code>/var/lib/amavis/virusmails/</code>. These paths are inside the docker container.</p>
</div>
<h5 id="sa_spam_subject"><a class="toclink" href="#sa_spam_subject">SA_SPAM_SUBJECT</a></h5>
<p class="admonition-title">Note</p>
<p>The Amavis action configured by this setting:</p>
<ul>
<li><strong>***SPAM***</strong> =&gt; add tag to subject if spam detected</li>
<li>Influences the behaviour of the <a href="#sa_kill"><code>SA_KILL</code></a> setting.</li>
<li>Applies to the Amavis config parameters <code>$final_spam_destiny</code> and <code>$final_bad_header_destiny</code>.</li>
</ul>
<p>Note: this SpamAssassin setting needs <code>ENABLE_SPAMASSASSIN=1</code>. Add the SpamAssassin score to the subject line by inserting the keyword _SCORE_: <strong>***SPAM(_SCORE_)***</strong>.</p>
</div>
<div class="admonition note">
<p class="admonition-title">This ENV setting is related to</p>
<ul>
<li><a href="#move_spam_to_junk"><code>MOVE_SPAM_TO_JUNK=1</code></a></li>
<li><a href="#mark_spam_as_read"><code>MARK_SPAM_AS_READ=1</code></a></li>
<li><a href="#sa_spam_subject"><code>SA_SPAM_SUBJECT</code></a></li>
</ul>
</div>
<h5 id="sa_tag"><a class="toclink" href="#sa_tag">SA_TAG</a></h5>
<ul>
<li><strong>2.0</strong> =&gt; add 'spam info' headers at, or above this spam score</li>
</ul>
<p>Mail is not yet considered spam at this spam score, but for purposes like diagnostics it can be useful to identify mail with a spam score at a lower bound than <code>SA_TAG2</code>.</p>
<details class="example">
<summary><code>X-Spam</code> headers appended to mail</summary>
<p>Send a simple mail to a local DMS account <code>hello@example.com</code>:</p>
<div class="highlight"><pre><span></span><code>docker<span class="w"> </span><span class="nb">exec</span><span class="w"> </span>dms<span class="w"> </span>swaks<span class="w"> </span>--server<span class="w"> </span><span class="m">0</span>.0.0.0<span class="w"> </span>--to<span class="w"> </span>hello@example.com<span class="w"> </span>--body<span class="w"> </span><span class="s1">&#39;spam&#39;</span>
</code></pre></div>
<p>Inspecting the raw mail you will notice several <code>X-Spam</code> headers were added to the mail like this:</p>
<div class="highlight"><pre><span></span><code>X-Spam-Flag: NO
X-Spam-Score: 4.162
X-Spam-Level: ****
X-Spam-Status: No, score=4.162 tagged_above=2 required=4
tests=[BODY_SINGLE_WORD=1, DKIM_ADSP_NXDOMAIN=0.8,
NO_DNS_FOR_FROM=0.379, NO_RECEIVED=-0.001, NO_RELAYS=-0.001,
PYZOR_CHECK=1.985] autolearn=no autolearn_force=no
</code></pre></div>
<div class="admonition info">
<p class="admonition-title">The <code>X-Spam-Score</code> is <code>4.162</code></p>
<p>High enough for <code>SA_TAG</code> to trigger adding these headers, but not high enough for <code>SA_TAG2</code> (<em>which would set <code>X-Spam-Flag: YES</code> instead</em>).</p>
</div>
</details>
<h5 id="sa_tag2"><a class="toclink" href="#sa_tag2">SA_TAG2</a></h5>
<ul>
<li><strong>6.31</strong> =&gt; add 'spam detected' headers at, or above this level</li>
</ul>
<p>When a spam score is high enough, mark mail as spam (<em>Appends the mail header: <code>X-Spam-Flag: YES</code></em>).</p>
<div class="admonition info">
<p class="admonition-title">Interaction with other ENV</p>
<ul>
<li><a href="#sa_spam_subject"><code>SA_SPAM_SUBJECT</code></a> modifies the mail subject to better communicate spam mail to the user.</li>
<li><a href="#move_spam_to_junk"><code>MOVE_SPAM_TO_JUNK=1</code></a>: The mail is still delivered, but to the recipient(s) junk folder instead. This feature reduces the usefulness of <code>SA_SPAM_SUBJECT</code>.</li>
</ul>
</div>
<h5 id="sa_kill"><a class="toclink" href="#sa_kill">SA_KILL</a></h5>
<ul>
<li><strong>10.0</strong> =&gt; quarantine + triggers action to handle spam</li>
</ul>
<p>Controls the spam score threshold for triggering an action on mail that has a high spam score.</p>
<details class="tip">
<summary>Choosing an appropriate <code>SA_KILL</code> value</summary>
<p>The value should be high enough to be represent confidence in mail as spam:</p>
<ul>
<li>Too low: The action taken may prevent legitimate mail (ham) that was incorrectly detected as spam from being delivered successfully.</li>
<li>Too high: Allows more spam to bypass the <code>SA_KILL</code> trigger (<em>how to treat mail with high confidence that it is actually spam</em>).</li>
</ul>
<p>Experiences from DMS users with these settings has been <a href="https://github.com/docker-mailserver/docker-mailserver/pull/3058#issuecomment-1420268148">collected here</a>, along with <a href="https://github.com/docker-mailserver/docker-mailserver/pull/3058#issuecomment-1416547911">some direct configuration guides</a> (<em>under "Resources for references"</em>).</p>
</details>
<details class="info">
<summary>Trigger action</summary>
<p>DMS will configure Amavis with either of these actions based on the DMS <a href="#spamassassin_spam_to_inbox"><code>SPAMASSASSIN_SPAM_TO_INBOX</code></a> ENV setting:</p>
<ul>
<li><code>D_PASS</code> (<strong>default</strong>):<ul>
<li>Accept mail and deliver it to the recipient(s), despite the high spam score. A copy is still stored in quarantine.</li>
<li>This is a good default to start with until you are more confident in an <code>SA_KILL</code> threshold that won't accidentally discard / bounce legitimate mail users are expecting to arrive but is detected as spam.</li>
</ul>
</li>
<li><code>D_BOUNCE</code>:<ul>
<li>Additionally sends a bounce notification (DSN).</li>
<li>The <a href="https://www.ijs.si/software/amavisd/amavisd-new-docs.html#actions">DSN is suppressed</a> (<em>no bounce sent</em>) when the spam score exceeds the Amavis <code>$sa_dsn_cutoff_level</code> config setting (default: <code>10</code>). With the DMS <code>SA_KILL</code> default also being <code>10</code>, no DSN will ever be sent.</li>
</ul>
</li>
<li><code>D_REJECT</code> / <code>D_DISCARD</code>:<ul>
<li>These two aren't configured by DMS, but are valid alternative action values if configuring Amavis directly.</li>
</ul>
</li>
</ul>
</details>
<details class="note">
<summary>Quarantined mail</summary>
<p>When mail has a spam score that reaches the <code>SA_KILL</code> threshold:</p>
<ul>
<li><a href="https://www.ijs.si/software/amavisd/amavisd-new-docs.html#quarantine">It will be quarantined</a> regardless of the <code>SA_KILL</code> action to perform.</li>
<li>With <code>D_PASS</code> the delivered mail also appends an <code>X-Quarantine-ID</code> mail header. The ID value of this header is part of the quarantined file name.</li>
</ul>
<p>If emails are quarantined, they are compressed and stored at a location dependent on the <a href="#one_dir"><code>ONE_DIR</code></a> setting:</p>
<ul>
<li><code>ONE_DIR=1</code> (default): <code>/var/mail-state/lib-amavis/virusmails/</code></li>
<li><code>ONE_DIR=0</code>: <code>/var/lib/amavis/virusmails/</code></li>
</ul>
<div class="admonition tip">
<p class="admonition-title">Tip</p>
<p>Easily list mail stored in quarantine with <code>find</code> and the quarantine path:</p>
<div class="highlight"><pre><span></span><code>find<span class="w"> </span>/var/lib/amavis/virusmails<span class="w"> </span>-type<span class="w"> </span>f
</code></pre></div>
</div>
</details>
<h5 id="sa_spam_subject"><a class="toclink" href="#sa_spam_subject">SA_SPAM_SUBJECT</a></h5>
<p>Adds a prefix to the subject header when mail is marked as spam (<em>via <a href="#sa_tag2"><code>SA_TAG2</code></a></em>).</p>
<ul>
<li><strong><code>'***SPAM*** '</code></strong> =&gt; A string value to use as a mail subject prefix.</li>
<li><code>undef</code> =&gt; Opt-out of modifying the subject for mail marked as spam.</li>
</ul>
<details class="example">
<summary>Including trailing white-space</summary>
<p>Add trailing white-space by quote wrapping the value: <code>SA_SPAM_SUBJECT='[SPAM] '</code></p>
</details>
<details class="example">
<summary>Including the associated spam score</summary>
<p>The <a href="https://spamassassin.apache.org/full/4.0.x/doc/Mail_SpamAssassin_Conf.html#rewrite_header-subject-from-to-STRING"><code>_SCORE_</code> tag</a> will be substituted with the SpamAssassin score: <code>SA_SPAM_SUBJECT=***SPAM(_SCORE_)***</code>.</p>
</details>
<h5 id="sa_shortcircuit_bayes_spam"><a class="toclink" href="#sa_shortcircuit_bayes_spam">SA_SHORTCIRCUIT_BAYES_SPAM</a></h5>
<ul>
<li><strong>1</strong> =&gt; will activate SpamAssassin short circuiting for bayes spam detection.</li>
</ul>
<p>This will uncomment the respective line in <code>/etc/spamassasin/local.cf</code></p>
<p>Note: activate this only if you are confident in your bayes database for identifying spam.</p>
<div class="admonition warning">
<p class="admonition-title">Warning</p>
<p>Activate this only if you are confident in your bayes database for identifying spam.</p>
</div>
<h5 id="sa_shortcircuit_bayes_ham"><a class="toclink" href="#sa_shortcircuit_bayes_ham">SA_SHORTCIRCUIT_BAYES_HAM</a></h5>
<ul>
<li><strong>1</strong> =&gt; will activate SpamAssassin short circuiting for bayes ham detection</li>
</ul>
<p>This will uncomment the respective line in <code>/etc/spamassasin/local.cf</code></p>
<p>Note: activate this only if you are confident in your bayes database for identifying ham.</p>
<div class="admonition warning">
<p class="admonition-title">Warning</p>
<p>Activate this only if you are confident in your bayes database for identifying ham.</p>
</div>
<h4 id="fetchmail"><a class="toclink" href="#fetchmail">Fetchmail</a></h4>
<h5 id="enable_fetchmail"><a class="toclink" href="#enable_fetchmail">ENABLE_FETCHMAIL</a></h5>
<ul>

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@ -1987,13 +1987,6 @@
How can I manage my custom SpamAssassin rules?
</a>
</li>
<li class="md-nav__item">
<a href="#what-are-acceptable-sa_spam_subject-values" class="md-nav__link">
What are acceptable SA_SPAM_SUBJECT values?
</a>
</li>
<li class="md-nav__item">
@ -2015,6 +2008,13 @@
How do I have more control about what SpamAssassin is filtering?
</a>
</li>
<li class="md-nav__item">
<a href="#how-can-i-send-quarantined-mail-to-a-mailbox" class="md-nav__link">
How can I send quarantined mail to a mailbox?
</a>
</li>
</ul>
@ -2470,13 +2470,6 @@
How can I manage my custom SpamAssassin rules?
</a>
</li>
<li class="md-nav__item">
<a href="#what-are-acceptable-sa_spam_subject-values" class="md-nav__link">
What are acceptable SA_SPAM_SUBJECT values?
</a>
</li>
<li class="md-nav__item">
@ -2498,6 +2491,13 @@
How do I have more control about what SpamAssassin is filtering?
</a>
</li>
<li class="md-nav__item">
<a href="#how-can-i-send-quarantined-mail-to-a-mailbox" class="md-nav__link">
How can I send quarantined mail to a mailbox?
</a>
</li>
</ul>
@ -2783,13 +2783,7 @@ supervisorctl<span class="w"> </span>update
<p>When you run DMS with the ENV variable <code>ONE_DIR=1</code> (default), this directory will provide support to persist Fail2Ban blocks, ClamAV signature updates, and the like when the container is restarted or recreated. Service data is <a href="https://github.com/docker-mailserver/docker-mailserver/blob/c7e498194546416fb7231cb03254e77e085d18df/target/scripts/startup/misc-stack.sh#L24-L33">relocated to the <code>mail-state</code> folder</a> for the following services: Postfix, Dovecot, Fail2Ban, Amavis, PostGrey, ClamAV, SpamAssassin, Rspamd &amp; Redis.</p>
<h3 id="spamassasin"><a class="toclink" href="#spamassasin">SpamAssasin</a></h3>
<h4 id="how-can-i-manage-my-custom-spamassassin-rules"><a class="toclink" href="#how-can-i-manage-my-custom-spamassassin-rules">How can I manage my custom SpamAssassin rules?</a></h4>
<p>Antispam rules are managed in <code>docker-data/dms/config/spamassassin-rules.cf</code>.</p>
<h4 id="what-are-acceptable-sa_spam_subject-values"><a class="toclink" href="#what-are-acceptable-sa_spam_subject-values">What are acceptable <code>SA_SPAM_SUBJECT</code> values?</a></h4>
<p>For no subject set <code>SA_SPAM_SUBJECT=undef</code>.</p>
<p>For a trailing white-space subject one can define the whole variable with quotes in <code>compose.yaml</code>:</p>
<div class="highlight"><pre><span></span><code><span class="nt">environment</span><span class="p">:</span>
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="s">&quot;SA_SPAM_SUBJECT=[SPAM]</span><span class="nv"> </span><span class="s">&quot;</span>
</code></pre></div>
<p>Anti-spam rules are managed in <code>docker-data/dms/config/spamassassin-rules.cf</code>.</p>
<h4 id="why-are-spamassassin-x-headers-not-inserted-into-my-subdomainexamplecom-subdomain-emails"><a class="toclink" href="#why-are-spamassassin-x-headers-not-inserted-into-my-subdomainexamplecom-subdomain-emails">Why are SpamAssassin <code>x-headers</code> not inserted into my <code>subdomain.example.com</code> subdomain emails?</a></h4>
<p>In the default setup, amavis only applies SpamAssassin x-headers into domains matching the template listed in the config file (<code>05-domain_id</code> in the amavis defaults).</p>
<p>The default setup <code>@local_domains_acl = ( ".$mydomain" );</code> does not match subdomains. To match subdomains, you can override the <code>@local_domains_acl</code> directive in the amavis user config file <code>50-user</code> with <code>@local_domains_maps = (".");</code> to match any sort of domain template.</p>
@ -2858,40 +2852,25 @@ chmod<span class="w"> </span><span class="m">0644</span><span class="w"> </span>
<span class="w"> </span><span class="nt">file</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">./docker-data/dms/cron/sa-learn</span>
</code></pre></div>
</details>
<p>With the default settings, SpamAssassin will require 200 mails trained for spam (for example with the method explained above) and 200 mails trained for ham (using the same command as above but using <code>--ham</code> and providing it with some ham mails). Until you provided these 200+200 mails, SpamAssassin will not take the learned mails into account. For further reference, see the <a href="https://wiki.apache.org/spamassassin/BayesNotWorking">SpamAssassin Wiki</a>.</p>
<h4 id="how-do-i-have-more-control-about-what-spamassassin-is-filtering"><a class="toclink" href="#how-do-i-have-more-control-about-what-spamassassin-is-filtering">How do I have more control about what SpamAssassin is filtering?</a></h4>
<p>By default, SPAM and INFECTED emails are put to a quarantine which is not very straight forward to access. Several config settings are affecting this behavior:</p>
<p>First, make sure you have the proper thresholds set:</p>
<div class="highlight"><pre><span></span><code><span class="na">SA_TAG</span><span class="o">=</span><span class="s">-100000.0</span>
<span class="na">SA_TAG2</span><span class="o">=</span><span class="s">3.75</span>
<span class="na">SA_KILL</span><span class="o">=</span><span class="s">100000.0</span>
</code></pre></div>
<p>With the default settings, SpamAssassin will require 200 mails trained for spam (for example with the method explained above) and 200 mails trained for ham (using the same command as above but using <code>--ham</code> and providing it with some ham mails).</p>
<ul>
<li>The very negative value in <code>SA_TAG</code> makes sure, that all emails have the SpamAssassin headers included.</li>
<li><code>SA_TAG2</code> is the actual threshold to set the YES/NO flag for spam detection.</li>
<li><code>SA_KILL</code> needs to be very high, to make sure nothing is bounced at all (<code>SA_KILL</code> superseeds <code>SPAMASSASSIN_SPAM_TO_INBOX</code>)</li>
<li>Until you provided these 200+200 mails, SpamAssassin will not take the learned mails into account.</li>
<li>For further reference, see the <a href="https://wiki.apache.org/spamassassin/BayesNotWorking">SpamAssassin Wiki</a>.</li>
</ul>
<p>Make sure everything (including SPAM) is delivered to the inbox and not quarantined:</p>
<div class="highlight"><pre><span></span><code><span class="na">SPAMASSASSIN_SPAM_TO_INBOX</span><span class="o">=</span><span class="s">1</span>
</code></pre></div>
<p>Use <code>MOVE_SPAM_TO_JUNK=1</code> or create a sieve script which puts spam to the Junk folder:</p>
<div class="highlight"><pre><span></span><code><span class="kn">require</span> <span class="p">[</span><span class="s">&quot;comparator-i;ascii-numeric&quot;</span><span class="p">,</span><span class="s">&quot;relational&quot;</span><span class="p">,</span><span class="s">&quot;fileinto&quot;</span><span class="p">];</span>
<span class="nb">if</span> <span class="nb">header</span> <span class="nt">:contains</span> <span class="s">&quot;X-Spam-Flag&quot;</span> <span class="s">&quot;YES&quot;</span> <span class="p">{</span>
<span class="nb">fileinto</span> <span class="s">&quot;Junk&quot;</span><span class="p">;</span>
<span class="p">}</span> <span class="nb">elsif</span> <span class="nb">allof</span> <span class="p">(</span>
<span class="nb">not</span> <span class="nb">header</span> <span class="nt">:matches</span> <span class="s">&quot;x-spam-score&quot;</span> <span class="s">&quot;-*&quot;</span><span class="p">,</span>
<span class="nb">header</span> <span class="nt">:value</span> <span class="s">&quot;ge&quot;</span> <span class="nt">:comparator</span> <span class="s">&quot;i;ascii-numeric&quot;</span> <span class="s">&quot;x-spam-score&quot;</span> <span class="s">&quot;3.75&quot;</span>
<span class="p">)</span> <span class="p">{</span>
<span class="nb">fileinto</span> <span class="s">&quot;Junk&quot;</span><span class="p">;</span>
<span class="p">}</span>
</code></pre></div>
<p>Create a dedicated mailbox for emails which are infected/bad header and everything amavis is blocking by default and put its address into <code>docker-data/dms/config/amavis.cf</code></p>
<div class="highlight"><pre><span></span><code><span class="na">$clean_quarantine_to</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">&quot;amavis\@example.com&quot;</span><span class="c1">;</span>
<span class="na">$virus_quarantine_to</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">&quot;amavis\@example.com&quot;</span><span class="c1">;</span>
<span class="na">$banned_quarantine_to</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">&quot;amavis\@example.com&quot;</span><span class="c1">;</span>
<span class="na">$bad_header_quarantine_to</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">&quot;amavis\@example.com&quot;</span><span class="c1">;</span>
<span class="na">$spam_quarantine_to</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">&quot;amavis\@example.com&quot;</span><span class="c1">;</span>
<h4 id="how-do-i-have-more-control-about-what-spamassassin-is-filtering"><a class="toclink" href="#how-do-i-have-more-control-about-what-spamassassin-is-filtering">How do I have more control about what SpamAssassin is filtering?</a></h4>
<p>This is related to Amavis processing the mail after SpamAssassin has analyzed it and assigned a spam score.</p>
<ul>
<li>DMS provides some <a href="../config/environment/#spamassassin">common SA tunables via ENV</a>.</li>
<li>Additional configuration can be managed with the DMS config volume by providing <code>docker-data/dms/config/amavis.cf</code>.</li>
</ul>
<h4 id="how-can-i-send-quarantined-mail-to-a-mailbox"><a class="toclink" href="#how-can-i-send-quarantined-mail-to-a-mailbox">How can I send quarantined mail to a mailbox?</a></h4>
<p>SPAM and INFECTED emails that <a href="../config/environment/#sa_kill">reach the <code>SA_KILL</code> threshold are archived into quarantine</a>.</p>
<p>Instead of a quarantine folder, you can use a dedicated mailbox instead. Create an account like <code>quarantine@example.com</code> and create <code>docker-data/dms/config/amavis.cf</code>:</p>
<div class="highlight"><pre><span></span><code><span class="na">$clean_quarantine_to</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">&quot;quarantine\@example.com&quot;</span><span class="c1">;</span>
<span class="na">$virus_quarantine_to</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">&quot;quarantine\@example.com&quot;</span><span class="c1">;</span>
<span class="na">$banned_quarantine_to</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">&quot;quarantine\@example.com&quot;</span><span class="c1">;</span>
<span class="na">$bad_header_quarantine_to</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">&quot;quarantine\@example.com&quot;</span><span class="c1">;</span>
<span class="na">$spam_quarantine_to</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">&quot;quarantine\@example.com&quot;</span><span class="c1">;</span>
</code></pre></div>

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<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<meta name="description" content="A fullstack but simple mail-server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) using Docker.">
<meta name="description" content="A fullstack but simple mail-server (SMTP, IMAP, LDAP, Anti-spam, Anti-virus, etc.) using Docker.">
<meta name="author" content="docker-mailserver (Github Organization)">
@ -2023,7 +2023,7 @@
</div>
<p>This documentation provides you not only with the basic setup and configuration of DMS but also with advanced configuration, elaborate usage scenarios, detailed examples, hints and more.</p>
<h2 id="about"><a class="toclink" href="#about">About</a></h2>
<p><code>docker-mailserver</code>, or DMS for short, is a production-ready fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.). It employs only configuration files, no SQL database. The image is focused around the slogan "Keep it simple and versioned".</p>
<p><code>docker-mailserver</code>, or DMS for short, is a production-ready fullstack but simple mail server (SMTP, IMAP, LDAP, Anti-spam, Anti-virus, etc.). It employs only configuration files, no SQL database. The image is focused around the slogan "Keep it simple and versioned".</p>
<h2 id="contents"><a class="toclink" href="#contents">Contents</a></h2>
<h3 id="getting-started"><a class="toclink" href="#getting-started">Getting Started</a></h3>
<p>If you're completely new to mail servers or you want to read up on them, check out our <a href="./introduction/"><em>Introduction</em> page</a>. If you're new to DMS as a mail server appliance, make sure to read the <a href="./usage/"><em>Usage</em> chapter</a> first. If you want to look at examples for Docker Compose, we have an <a href="./examples/tutorials/basic-installation/"><em>Examples</em> page</a>.</p>

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<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<meta name="description" content="A fullstack but simple mail-server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) using Docker.">
<meta name="description" content="A fullstack but simple mail-server (SMTP, IMAP, LDAP, Anti-spam, Anti-virus, etc.) using Docker.">
<meta name="author" content="docker-mailserver (Github Organization)">

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<meta name="description" content="A fullstack but simple mail-server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) using Docker.">
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