Cost-effective and low-maintenance email infrastructure

Choose an email processing and security platform that makes email infrastructure scalable and easy to manage.

Consolidates email infrastructure

Cut system complexity

In contrast to traditional layered email infrastructure, Halon enables you to rapidly architect the system that you want without compromises. At the same time, Halon will reduce complexity, lower maintenance and increase performance. Halon customers typically cut over 70% of operations expenses, freeing resources for other revenue-generating projects. If you have email storage, Halon takes care of everything else, in an integrated and scriptable fashion.

Integrated blue-green deployment

Reduce deployment time and risks

Run parallel versions of your configuration with traffic splitting. Along with a consolidated and programmatic approach to in-transit email, you can make rapid implementations as well as reliable deployments of changes or new functionality. Revision-managed configuration makes all changes fully visible, and provides instant rollbacks.

Slideshow

Live staging

×

To demonstrate our live staging, I'll make two SMTP connections using the terminal.

Everything that is connection-bound can be tested; the script-based SMTP hooks...

...as well as SMTP server settings. We'll enable SMTPUTF8 and change the banner hostname for the port 25 listener.

For the sake of this demo, we setup the live staging to apply for 100% of new connections.

When pressing "Start", the current working copy will be deployed as a testing configuration.

The previously opened connection is unaffected, as it still references the regular configuration.

When making a new connection however, you can see the new hostname, UTF8 flag, and MAIL FROM response.

Developer-friendly

Keep your system fully flexible

Keep up with your competition through rapid implementation of new technologies, with Halon's email-centric scripting language. It could be DKIM signing with keys delivered from a control panel using a REST API lookup, custom SRS, dynamic routing or tailored outbound policies for maximum deliverability. The web admin's IDE features a sandbox, live staging, REPL interpreter and revision management. Halon provides a powerful software framework that performs better than most in terms of speed and efficiency, while dramatically improving system flexibility.

Script reference Live demo

Choose example

Routing Source IP hash Rate limiting DKIM signing

• Routing
• Source hash
• Rates
• DKIM

Halon enabled us to reduce initial capital cost, ongoing support and maintenance costs, rack space, and ongoing power and cooling requirements by up to 70%.

Anders Saaby, One.com. Case study

Halon can do more than we expected. We should have chosen Halon earlier; we could never have built a solution like this on our own.

Marc van de Geijn, bHosted. Case study

We reduced hosting costs, saved 30% on operating costs, reduced time of managing by 90% and improved customer response time to minutes from hours.

Brad Slavin, DuoCircle Case study

It is rare that I recommend a commercial product at all, but Halon deserves it. The software is very robust, and it is easy to follow the flow of emails.

Peter Magnusson, Crystone

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if (!$senderip) {
    SetProtocol("smtp"); // Use SMTP for locally generated DSNs
    Try();
}
// Use a more robust lookup like https://wiki.halon.io/API_calls
$route = cache ["ttl" => 3600] http("$apiurl/route", [], [$recipientdomain]);
$route = json_decode($route);
if (!is_array($route))
    Reschedule(3600, ["reason" => "Invalid route", "increment_retry" => false]);
SetDestination($route["storage"]);
SetProtocol("lmtp");

if (GetMetaData()["spam"] == "yes") {
    // Bulk IP
    SetSourceIP("netaddr:4");
} else {
    // Source hash
    $addrs = ["netaddr:1", "netaddr:2", "netaddr:3"];
    $sourcehash = number("0x".md5($senderdomain)[0:6]);
    SetSourceIP($addrs[$sourcehash % count($addrs)]);
}
$ptr = cache ["ttl" => 3600] dnsptr($sourceip, ["extended_result" => true]);
if (isset($ptr["result"][0]))
    SetHELO($ptr["result"][0]); 

// In the post-delivery script
if ($errorcode >= 400)
    rate("delivery-failures", $senderdomain, 1000, 3600);

// In the MAIL FROM script
if (rate("delivery-failures", $senderdomain, 0, 3600) > 999)
    Defer("$senderdomain has more than 1000 failed deliveries during the last hour");

// Per-domain DKIM signing using external database
function Deliver() {
    // Override the deliver function
    global $apiurl, $senderdomain;
    // Use a more robust lookup like https://wiki.halon.io/API_calls
    $dkim = cache ["ttl" => 86400, "size"=> 32768, "ttl_override" => ["" => 60]]
        http("$apiurl/dkim/$1", ["timeout" => 10], [$senderdomain]);
    $dkim = json_decode($dkim);
    if (is_array($dkim))
        DKIMSign($dkim["selector"], $dkim["domain"], $dkim["rsakey"]);
    builtin Deliver();
}