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<li class="md-nav__item">
|
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<a href="../../../introduction/" class="md-nav__link">
|
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Introduction
|
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</a>
|
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</li>
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<li class="md-nav__item md-nav__item--active md-nav__item--nested">
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<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_3" type="checkbox" id="__nav_3" checked>
|
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<label class="md-nav__link" for="__nav_3">
|
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Configuration
|
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<span class="md-nav__icon md-icon"></span>
|
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</label>
|
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<nav class="md-nav" aria-label="Configuration" data-md-level="1">
|
|
<label class="md-nav__title" for="__nav_3">
|
|
<span class="md-nav__icon md-icon"></span>
|
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Configuration
|
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</label>
|
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<ul class="md-nav__list" data-md-scrollfix>
|
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<li class="md-nav__item">
|
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<a href="../../setup.sh/" class="md-nav__link">
|
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Your Best Friend setup.sh
|
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</a>
|
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</li>
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<li class="md-nav__item md-nav__item--nested">
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<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_3_2" data-md-state="indeterminate" type="checkbox" id="__nav_3_2" checked>
|
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|
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<label class="md-nav__link" for="__nav_3_2">
|
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User Management
|
|
<span class="md-nav__icon md-icon"></span>
|
|
</label>
|
|
<nav class="md-nav" aria-label="User Management" data-md-level="2">
|
|
<label class="md-nav__title" for="__nav_3_2">
|
|
<span class="md-nav__icon md-icon"></span>
|
|
User Management
|
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</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
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<li class="md-nav__item">
|
|
<a href="../../user-management/accounts/" class="md-nav__link">
|
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Accounts
|
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</a>
|
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</li>
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<li class="md-nav__item">
|
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<a href="../../user-management/aliases/" class="md-nav__link">
|
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Aliases
|
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</a>
|
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</li>
|
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</ul>
|
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</nav>
|
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</li>
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<li class="md-nav__item md-nav__item--nested">
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<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_3_3" data-md-state="indeterminate" type="checkbox" id="__nav_3_3" checked>
|
|
|
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<label class="md-nav__link" for="__nav_3_3">
|
|
Best Practices
|
|
<span class="md-nav__icon md-icon"></span>
|
|
</label>
|
|
<nav class="md-nav" aria-label="Best Practices" data-md-level="2">
|
|
<label class="md-nav__title" for="__nav_3_3">
|
|
<span class="md-nav__icon md-icon"></span>
|
|
Best Practices
|
|
</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
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<li class="md-nav__item">
|
|
<a href="../../best-practices/dkim/" class="md-nav__link">
|
|
DKIM
|
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</a>
|
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</li>
|
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<li class="md-nav__item">
|
|
<a href="../../best-practices/dmarc/" class="md-nav__link">
|
|
DMARC
|
|
</a>
|
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</li>
|
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<li class="md-nav__item">
|
|
<a href="../../best-practices/spf/" class="md-nav__link">
|
|
SPF
|
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</a>
|
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</li>
|
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<li class="md-nav__item">
|
|
<a href="../../best-practices/autodiscover/" class="md-nav__link">
|
|
Auto-discovery
|
|
</a>
|
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</li>
|
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|
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|
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</ul>
|
|
</nav>
|
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</li>
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<li class="md-nav__item md-nav__item--nested">
|
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<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_3_4" data-md-state="indeterminate" type="checkbox" id="__nav_3_4" checked>
|
|
|
|
<label class="md-nav__link" for="__nav_3_4">
|
|
Security
|
|
<span class="md-nav__icon md-icon"></span>
|
|
</label>
|
|
<nav class="md-nav" aria-label="Security" data-md-level="2">
|
|
<label class="md-nav__title" for="__nav_3_4">
|
|
<span class="md-nav__icon md-icon"></span>
|
|
Security
|
|
</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
|
|
|
|
|
|
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|
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<li class="md-nav__item">
|
|
<a href="../../security/understanding-the-ports/" class="md-nav__link">
|
|
Understanding the Ports
|
|
</a>
|
|
</li>
|
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<li class="md-nav__item">
|
|
<a href="../../security/ssl/" class="md-nav__link">
|
|
SSL/TLS
|
|
</a>
|
|
</li>
|
|
|
|
|
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|
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<li class="md-nav__item">
|
|
<a href="../../security/fail2ban/" class="md-nav__link">
|
|
Fail2Ban
|
|
</a>
|
|
</li>
|
|
|
|
|
|
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|
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|
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|
|
<li class="md-nav__item">
|
|
<a href="../../security/mail_crypt/" class="md-nav__link">
|
|
Mail Encryption
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
</ul>
|
|
</nav>
|
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</li>
|
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<li class="md-nav__item md-nav__item--nested">
|
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|
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|
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<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_3_5" data-md-state="indeterminate" type="checkbox" id="__nav_3_5" checked>
|
|
|
|
<label class="md-nav__link" for="__nav_3_5">
|
|
Troubleshooting
|
|
<span class="md-nav__icon md-icon"></span>
|
|
</label>
|
|
<nav class="md-nav" aria-label="Troubleshooting" data-md-level="2">
|
|
<label class="md-nav__title" for="__nav_3_5">
|
|
<span class="md-nav__icon md-icon"></span>
|
|
Troubleshooting
|
|
</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../troubleshooting/debugging/" class="md-nav__link">
|
|
Debugging
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
</ul>
|
|
</nav>
|
|
</li>
|
|
|
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|
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|
|
|
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|
|
<li class="md-nav__item">
|
|
<a href="../../pop3/" class="md-nav__link">
|
|
Mail Delivery with POP3
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
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|
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|
|
<li class="md-nav__item md-nav__item--active md-nav__item--nested">
|
|
|
|
|
|
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_3_7" type="checkbox" id="__nav_3_7" checked>
|
|
|
|
<label class="md-nav__link" for="__nav_3_7">
|
|
Advanced Configuration
|
|
<span class="md-nav__icon md-icon"></span>
|
|
</label>
|
|
<nav class="md-nav" aria-label="Advanced Configuration" data-md-level="2">
|
|
<label class="md-nav__title" for="__nav_3_7">
|
|
<span class="md-nav__icon md-icon"></span>
|
|
Advanced Configuration
|
|
</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../optional-config/" class="md-nav__link">
|
|
Optional Configuration
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
|
<li class="md-nav__item md-nav__item--nested">
|
|
|
|
|
|
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_3_7_2" data-md-state="indeterminate" type="checkbox" id="__nav_3_7_2" checked>
|
|
|
|
<label class="md-nav__link" for="__nav_3_7_2">
|
|
Maintenance
|
|
<span class="md-nav__icon md-icon"></span>
|
|
</label>
|
|
<nav class="md-nav" aria-label="Maintenance" data-md-level="3">
|
|
<label class="md-nav__title" for="__nav_3_7_2">
|
|
<span class="md-nav__icon md-icon"></span>
|
|
Maintenance
|
|
</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../maintenance/update-and-cleanup/" class="md-nav__link">
|
|
Update and Cleanup
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
</ul>
|
|
</nav>
|
|
</li>
|
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|
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|
|
<li class="md-nav__item md-nav__item--nested">
|
|
|
|
|
|
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_3_7_3" data-md-state="indeterminate" type="checkbox" id="__nav_3_7_3" checked>
|
|
|
|
<label class="md-nav__link" for="__nav_3_7_3">
|
|
Override the Default Configs
|
|
<span class="md-nav__icon md-icon"></span>
|
|
</label>
|
|
<nav class="md-nav" aria-label="Override the Default Configs" data-md-level="3">
|
|
<label class="md-nav__title" for="__nav_3_7_3">
|
|
<span class="md-nav__icon md-icon"></span>
|
|
Override the Default Configs
|
|
</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../override-defaults/dovecot/" class="md-nav__link">
|
|
Dovecot
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../override-defaults/postfix/" class="md-nav__link">
|
|
Postfix
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../override-defaults/user-patches/" class="md-nav__link">
|
|
Modifications via Script
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
</ul>
|
|
</nav>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../auth-ldap/" class="md-nav__link">
|
|
LDAP Authentication
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
|
<li class="md-nav__item md-nav__item--active">
|
|
|
|
<input class="md-nav__toggle md-toggle" data-md-toggle="toc" type="checkbox" id="__toc">
|
|
|
|
|
|
|
|
<label class="md-nav__link md-nav__link--active" for="__toc">
|
|
Email Filtering with Sieve
|
|
<span class="md-nav__icon md-icon"></span>
|
|
</label>
|
|
|
|
<a href="./" class="md-nav__link md-nav__link--active">
|
|
Email Filtering with Sieve
|
|
</a>
|
|
|
|
|
|
<nav class="md-nav md-nav--secondary" aria-label="Table of contents">
|
|
|
|
|
|
|
|
|
|
<label class="md-nav__title" for="__toc">
|
|
<span class="md-nav__icon md-icon"></span>
|
|
Table of contents
|
|
</label>
|
|
<ul class="md-nav__list" data-md-component="toc" data-md-scrollfix>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#user-defined-sieve-filters" class="md-nav__link">
|
|
User-Defined Sieve Filters
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#manage-sieve" class="md-nav__link">
|
|
Manage Sieve
|
|
</a>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
|
|
</nav>
|
|
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../mail-fetchmail/" class="md-nav__link">
|
|
Email Gathering with Fetchmail
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item md-nav__item--nested">
|
|
|
|
|
|
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_3_7_7" data-md-state="indeterminate" type="checkbox" id="__nav_3_7_7" checked>
|
|
|
|
<label class="md-nav__link" for="__nav_3_7_7">
|
|
Email Forwarding
|
|
<span class="md-nav__icon md-icon"></span>
|
|
</label>
|
|
<nav class="md-nav" aria-label="Email Forwarding" data-md-level="3">
|
|
<label class="md-nav__title" for="__nav_3_7_7">
|
|
<span class="md-nav__icon md-icon"></span>
|
|
Email Forwarding
|
|
</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../mail-forwarding/relay-hosts/" class="md-nav__link">
|
|
Relay Hosts
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../mail-forwarding/aws-ses/" class="md-nav__link">
|
|
AWS SES
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
</ul>
|
|
</nav>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../full-text-search/" class="md-nav__link">
|
|
Full-Text Search
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../kubernetes/" class="md-nav__link">
|
|
Kubernetes
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../ipv6/" class="md-nav__link">
|
|
IPv6
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
</ul>
|
|
</nav>
|
|
</li>
|
|
|
|
|
|
|
|
</ul>
|
|
</nav>
|
|
</li>
|
|
|
|
|
|
|
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item md-nav__item--nested">
|
|
|
|
|
|
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_4" data-md-state="indeterminate" type="checkbox" id="__nav_4" checked>
|
|
|
|
<label class="md-nav__link" for="__nav_4">
|
|
Examples
|
|
<span class="md-nav__icon md-icon"></span>
|
|
</label>
|
|
<nav class="md-nav" aria-label="Examples" data-md-level="1">
|
|
<label class="md-nav__title" for="__nav_4">
|
|
<span class="md-nav__icon md-icon"></span>
|
|
Examples
|
|
</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item md-nav__item--nested">
|
|
|
|
|
|
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_4_1" data-md-state="indeterminate" type="checkbox" id="__nav_4_1" checked>
|
|
|
|
<label class="md-nav__link" for="__nav_4_1">
|
|
Tutorials
|
|
<span class="md-nav__icon md-icon"></span>
|
|
</label>
|
|
<nav class="md-nav" aria-label="Tutorials" data-md-level="2">
|
|
<label class="md-nav__title" for="__nav_4_1">
|
|
<span class="md-nav__icon md-icon"></span>
|
|
Tutorials
|
|
</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../../examples/tutorials/basic-installation/" class="md-nav__link">
|
|
Basic Installation
|
|
</a>
|
|
</li>
|
|
|
|
|
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<a href="https://github.com/docker-mailserver/docker-mailserver/edit/master/docs/content/config/advanced/mail-sieve.md" title="Edit this page" class="md-content__button md-icon">
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<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20.71 7.04c.39-.39.39-1.04 0-1.41l-2.34-2.34c-.37-.39-1.02-.39-1.41 0l-1.84 1.83 3.75 3.75M3 17.25V21h3.75L17.81 9.93l-3.75-3.75L3 17.25z"/></svg>
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</a>
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<h1>Email Filtering with Sieve</h1>
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|
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<h2 id="user-defined-sieve-filters"><a class="toclink" href="#user-defined-sieve-filters">User-Defined Sieve Filters</a></h2>
|
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<p><a href="http://sieve.info/">Sieve</a> allows to specify filtering rules for incoming emails that allow for example sorting mails into different folders depending on the title of an email.
|
|
There are global and user specific filters which are filtering the incoming emails in the following order:</p>
|
|
<ul>
|
|
<li>Global-before -> User specific -> Global-after</li>
|
|
</ul>
|
|
<p>Global filters are applied to EVERY incoming mail for EVERY email address.
|
|
To specify a global Sieve filter provide a <code>config/before.dovecot.sieve</code> or a <code>config/after.dovecot.sieve</code> file with your filter rules.
|
|
If any filter in this filtering chain discards an incoming mail, the delivery process will stop as well and the mail will not reach any following filters(e.g. global-before stops an incoming spam mail: The mail will get discarded and a user-specific filter won't get applied.)</p>
|
|
<p>To specify a user-defined Sieve filter place a <code>.dovecot.sieve</code> file into a virtual user's mail folder e.g. <code>/var/mail/domain.com/user1/.dovecot.sieve</code>. If this file exists dovecot will apply the filtering rules.</p>
|
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<p>It's even possible to install a user provided Sieve filter at startup during users setup: simply include a Sieve file in the <code>config</code> path for each user login that need a filter. The file name provided should be in the form <code><user_login>.dovecot.sieve</code>, so for example for <code>user1@domain.tld</code> you should provide a Sieve file named <code>config/user1@domain.tld.dovecot.sieve</code>.</p>
|
|
<p>An example of a sieve filter that moves mails to a folder <code>INBOX/spam</code> depending on the sender address:</p>
|
|
<div class="admonition example">
|
|
<p class="admonition-title">Example</p>
|
|
<div class="highlight"><pre><span></span><code><span class="kn">require</span> <span class="p">[</span><span class="s">"fileinto"</span><span class="p">,</span> <span class="s">"reject"</span><span class="p">];</span>
|
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|
<span class="nb">if</span> <span class="nb">address</span> <span class="nt">:contains</span> <span class="p">[</span><span class="s">"From"</span><span class="p">]</span> <span class="s">"spam@spam.com"</span> <span class="p">{</span>
|
|
<span class="nb">fileinto</span> <span class="s">"INBOX.spam"</span><span class="p">;</span>
|
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<span class="p">}</span> <span class="nb">else</span> <span class="p">{</span>
|
|
<span class="nb">keep</span><span class="p">;</span>
|
|
<span class="p">}</span>
|
|
</code></pre></div>
|
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</div>
|
|
<div class="admonition warning">
|
|
<p class="admonition-title">Warning</p>
|
|
<p>That folders have to exist beforehand if sieve should move them.</p>
|
|
</div>
|
|
<p>Another example of a sieve filter that forward mails to a different address:</p>
|
|
<div class="admonition example">
|
|
<p class="admonition-title">Example</p>
|
|
<div class="highlight"><pre><span></span><code><span class="kn">require</span> <span class="p">[</span><span class="s">"copy"</span><span class="p">];</span>
|
|
|
|
<span class="nb">redirect</span> <span class="nt">:copy</span> <span class="s">"user2@otherdomain.tld"</span><span class="p">;</span>
|
|
</code></pre></div>
|
|
</div>
|
|
<p>Just forward all incoming emails and do not save them locally:</p>
|
|
<div class="admonition example">
|
|
<p class="admonition-title">Example</p>
|
|
<div class="highlight"><pre><span></span><code><span class="nb">redirect</span> <span class="s">"user2@otherdomain.tld"</span><span class="p">;</span>
|
|
</code></pre></div>
|
|
</div>
|
|
<p>You can also use external programs to filter or pipe (process) messages by adding executable scripts in <code>config/sieve-pipe</code> or <code>config/sieve-filter</code>. This can be used in lieu of a local alias file, for instance to forward an email to a webservice. These programs can then be referenced by filename, by all users. Note that the process running the scripts run as a privileged user. For further information see <a href="https://wiki.dovecot.org/Pigeonhole/Sieve/Plugins/Pipe">Dovecot's wiki</a>.</p>
|
|
<div class="highlight"><pre><span></span><code><span class="kn">require</span> <span class="p">[</span><span class="s">"vnd.dovecot.pipe"</span><span class="p">];</span>
|
|
<span class="err">pipe</span> <span class="s">"external-program"</span><span class="p">;</span>
|
|
</code></pre></div>
|
|
<p>For more examples or a detailed description of the Sieve language have a look at <a href="http://sieve.info/examplescripts">the official site</a>. Other resources are available on the internet where you can find several <a href="https://support.tigertech.net/sieve#sieve-example-rules-jmp">examples</a>.</p>
|
|
<h2 id="manage-sieve"><a class="toclink" href="#manage-sieve">Manage Sieve</a></h2>
|
|
<p>The <a href="https://doc.dovecot.org/admin_manual/pigeonhole_managesieve_server/">Manage Sieve</a> extension allows users to modify their Sieve script by themselves. The authentication mechanisms are the same as for the main dovecot service. ManageSieve runs on port <code>4190</code> and needs to be enabled using the <code>ENABLE_MANAGESIEVE=1</code> environment variable.</p>
|
|
<div class="admonition example">
|
|
<p class="admonition-title">Example</p>
|
|
<div class="highlight"><pre><span></span><code><span class="c1"># docker-compose.yml</span>
|
|
<span class="nt">ports</span><span class="p">:</span>
|
|
<span class="p p-Indicator">-</span> <span class="s">"4190:4190"</span>
|
|
<span class="nt">environment</span><span class="p">:</span>
|
|
<span class="p p-Indicator">-</span> <span class="l l-Scalar l-Scalar-Plain">ENABLE_MANAGESIEVE=1</span>
|
|
</code></pre></div>
|
|
</div>
|
|
<p>All user defined sieve scripts that are managed by ManageSieve are stored in the user's home folder in <code>/var/mail/domain.com/user1/sieve</code>. Just one sieve script might be active for a user and is sym-linked to <code>/var/mail/domain.com/user1/.dovecot.sieve</code> automatically.</p>
|
|
<div class="admonition note">
|
|
<p class="admonition-title">Note</p>
|
|
<p>ManageSieve makes sure to not overwrite an existing <code>.dovecot.sieve</code> file. If a user activates a new sieve script the old one is backuped and moved to the <code>sieve</code> folder.</p>
|
|
</div>
|
|
<p>The extension is known to work with the following ManageSieve clients:</p>
|
|
<ul>
|
|
<li><strong>Sieve Editor</strong> a portable standalone application based on the former Thunderbird plugin (<a href="https://github.com/thsmi/sieve">https://github.com/thsmi/sieve</a>).</li>
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</ul>
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