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On the recordRead 8 Oct 202614 facts
Haraka
Plans and prices
Haraka
Free
Open-source SMTP server · MIT licensed · requires Node.js
Read 8 Oct 2026 · haraka.github.io
On the record
- Authentication security
- The flat-file authentication plugin stores passwords in clear text, and its documentation recommends using auth-encfile to protect credentials.haraka.github.io · read 8 Oct 2026
- Integrations
- Listed plugins support systems and services including LDAP, Dovecot, Redis, Kafka, MongoDB, SpamAssassin, and Rspamd.haraka.github.io · read 8 Oct 2026
- License
- Haraka is MIT licensed.haraka.github.io · read 8 Oct 2026
- Mail filtering
- Haraka can be used as a filtering MTA, with plugins for spam protection and checks such as DNS blocklists.haraka.github.io · read 8 Oct 2026
- Not a mail store
- Haraka says it is not a mail store, LDA, or IMAP server and is typically used alongside such systems.haraka.github.io · read 8 Oct 2026
- Outbound delivery
- Haraka includes an outbound mail delivery engine that queues messages marked for relaying.haraka.github.io · read 8 Oct 2026
- Plugin architecture
- Its modular plugin system lets JavaScript programmers change how the server behaves.haraka.github.io · read 8 Oct 2026
- Project stewardship
- The website says Haraka was started by Matt Sergeant and is maintained by the Haraka community.haraka.github.io · read 8 Oct 2026
- Purpose
- Haraka is a high-performance, flexible SMTP server written in Node.js.haraka.github.io · read 8 Oct 2026
- Runtime requirement
- Haraka requires Node.js and can be installed through npm, yarn, or pnpm.haraka.github.io · read 8 Oct 2026
- Scale
- The documentation says Haraka can serve thousands of concurrent connections and deliver thousands of messages per second.haraka.github.io · read 8 Oct 2026
- Submission agent
- Haraka can run as a message submission agent on port 587 with authentication and DKIM plugins enabled.haraka.github.io · read 8 Oct 2026
- Support
- The project directs users to its mailing list and GitHub Issues for help.haraka.github.io · read 8 Oct 2026
- TLS
- The TLS plugin enables STARTTLS and supports configurable certificates and TLS settings.haraka.github.io · read 8 Oct 2026
