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=== SMTP and e-mail ===
=== SMTP and e-mail ===
* Email security
* Email security
** Anti-spam by [[CYREN]] and an optimised [[SpamAssassin]]
** Anti-spam by [[Cyren]] and an optimised [[SpamAssassin]]
** Outbound spam filtering and [[delivery]]  
** Outbound spam filtering and [[delivery]]  
** [[DKIM]] signing and verification with [[DMARC]]
** [[DKIM]] signing and verification with [[DMARC]]

Revision as of 14:20, 10 September 2018

At its core, Halon is a scriptable SMTP server
Halon SMTP software,
the scriptable email gateway for service providers.
  • Current version
  • Halon 4.7-p1
  • FreeBSD 11.2-p1

Halon is a scriptable email gateway and anti-spam filter (MTA or proxy) with many features and an extensive ecosystem; probably best described as an email delivery and security platform. It is used primarily by web hosting providers, and powers some of the world's most popular mail servers.[1]

Getting started

The software can be downloaded for free and installed on any x86-64 server/computer or as a virtual machine. Supplementary software is available on our GitHub page.


Halon consolidates all the functionality needed in front of email servers

This informational website is arranged as a wiki. Below are a list of the most requested articles for your convenience.

SMTP and e-mail

Programming and integration

System and management