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# Cyren Anti-Spam

This is the documentation for the Cyren Anti-Spam add-on option.
The package consists of two services, *ctasd* which can be used to scan inbound messages and *ctasd-o* which can be used to scan outbound messages.

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## Table of contents

* [Installation](install.html.md)
  * [Prerequisites](install.html.md#prerequisites)
  * [Distributions](install.html.md#distributions)
    * [Ubuntu](install.html.md#ubuntu)
    * [RHEL](install.html.md#rhel)
  * [Startup](install.html.md#startup)
  * [Docker & K8s](install.html.md#docker-k8s)
* [Upgrade](upgrade.html.md)
* [Configuration](config.html.md)
  * [General directives](config.html.md#general-directives)
  * [Connectivity directives](config.html.md#connectivity-directives)
  * [HttpServer directives](config.html.md#httpserver-directives)
  * [Security directives](config.html.md#security-directives)
* [Integration](integration.html.md)