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## Introduction

[Rspamd](https://rspamd.com) is an advanced spam filtering system that allows evaluation of messages by a number of
rules including regular expressions, statistical analysis and custom services
such as URL black lists. Each message is analysed by Rspamd and given a `spam score`.

According to this spam score and the user's settings, Rspamd recommends an action for
the MTA to apply to the message, for example, to pass, reject or add a header.
Rspamd is designed to process hundreds of messages per second simultaneously, and provides a number of
useful features.


## Getting Started

A good starting point to study how to install and configure Rspamd is [the quick start guide](https://rspamd.com/doc/quickstart.html).

Rspamd is [packaged](https://rspamd.com/downloads.html) for the major Linux distributions, and is also available via [FreeBSD ports](https://freshports.org/mail/rspamd), NetBSD [pkgsrc](https://pkgsrc.org) and [OpenBSD ports](http://openports.se/mail/rspamd).

You can also watch some [videos about Rspamd](https://rspamd.com/media.html).

## Spam filtering features

Rspamd is shipped with various spam filtering modules and features enabled just out of the box.
The full list of built-in modules could be found in the [Rspamd documentation](https://rspamd.com/doc/modules/).

If that is not enough, Rspamd provides an extensive [Lua API](https://rspamd.com/doc/lua/) to write your own rules and plugins: <https://rspamd.com/doc/tutorials/writing_rules.html>

## Contributing

Please read [CONTRIBUTING.md](CONTRIBUTING.md) for details on the process for submitting pull requests to us.

## Authors

* **Vsevolod Stakhov** - [vstakhov](https://github.com/vstakhov)

See also the list of [contributors](AUTHORS.md) who participated in this project.

## License

This project is licensed under the Apache 2.0 License - see the [LICENSE.md](LICENSE.md) file for details

## References

* Home site: <https://rspamd.com>
* Development: <https://github.com/rspamd/rspamd>
* Site repository: <https://github.com/rspamd/rspamd.com>
