Haraka - a Node.js Mail Server

Haraka is a highly scalable node.js email server with a modular plugin architecture. Haraka can serve thousands of concurrent connections and deliver thousands of messages per second. Haraka and plugins are written in asynchronous JS and are very fast.

Haraka has very good spam protection (see plugins) and works well as a filtering MTA. It also works well as a MSA running on port 587 with auth and dkim_sign plugins enabled.

Haraka makes no attempt to be a mail store (like Exchange or Postfix/Exim/Qmail), a LDA, nor an IMAP server (like Dovecot or Courier). Haraka is typically used with such systems.

Haraka has a scalable outbound mail delivery engine built in. Mail marked as

relaying

auth

Getting Help

• Join the mailing list (implemented as a Haraka plugin)
• Join us on Slack
• GitHub Issues

Screencast

Getting started with Haraka

Why Use Haraka?

Haraka's plugin architecture provides an easily extensible MTA that complements traditional MTAs that excel at managing mail stores but do not have sufficient filtering.

The plugin system makes it easy to code new features. A typical example is providing qmail-like extended addresses to an Exchange system, whereby you could receive mail as

[email protected]

[email protected]

Plugins are provided for running mail through SpamAssassin, validating HELO names, checking DNS Blocklists, and many others.

Installing Haraka

Haraka requires node.js to run. Install Haraka with npm:

# If the second command gives "nobody" errors, uncomment & run the next command
# npm -g config set user root
npm install -g Haraka

After installation, use the

haraka

Running Haraka

First, create the service:

haraka -i /path/to/haraka_test

That creates the directory

haraka_test

config

plugin

hostname

If

hostname

config/host_list

[email protected]

domain.com

config/host_list

Finally, start Haraka using root permissions:

haraka -c /path/to/haraka_test

And it will run.

Configure Haraka

To choose which plugins run, edit

config/plugins

config/host_list

smtp-forward

config/smtp_forward.ini

Read the Fine Manual

haraka -h plugins/$name

The docs detail how each plugin is configured. After editing

config/plugins

Running from git

If you are unable to use npm to install Haraka, you can run from git by following these steps:

First clone the repository:

$ git clone https://github.com/haraka/Haraka.git
$ cd Haraka

Install Haraka's node.js dependencies locally:

$ npm install

Edit

config/plugins

config/smtp.ini

Finally run Haraka:

$ node haraka.js

License and Author

Haraka is MIT licensed - see the LICENSE file for details.

Haraka is a project started by Matt Sergeant, a 10 year veteran of the email and anti-spam world. Previous projects have been the project leader for SpamAssassin and a hacker on Qpsmtpd.