TES meeting on email security at Old Trafford in Manchester

By | February 1st, 2017|Categories: Blog|Tags: , , |

Email security was the topic of discussion at another Open-Xchange sponsored TES event held last Thursday in the fantastic setting of Old Trafford Stadium, the home of Manchester United. BT, TalkTalk and Plusnet, three of the largest ISPs in the UK, had delegates in attendance along with Halon and Cloudmark. This intimate group discussed the challenges facing email security as it stands today and how they could collaborate going forward to improve the state of affairs. […]

Top 10 reads on email security 2016

By | December 28th, 2016|Categories: Blog|Tags: , , , |

It’s been an exciting year in email security and infrastructure, and the Halon team has tried to cover some of the interesting stuff we’ve come across. In case you missed any of it, these are our top posts on email, security, tech and encryption. If  you have questions around any of it, just shoot us an email! […]

This year, wish lists will be sent to Santa via email

By | December 13th, 2016|Categories: Blog|Tags: , , |

Ever got an email from Santa Claus? Me neither, but in this day and age I’m assuming it’s just a matter of time. And when I do, I want to see his face in the ”From”-field. Yes, I said face, not name. […]

How One.com reduced email costs by up to 70%

By | November 21st, 2016|Categories: Blog|Tags: , , |

Anders Saaby, CTO, One.com explains, “Due to One.com’s high growth rate, we needed to upgrade our existing email delivery and security infrastructure to a newer solution that scaled better in terms of performance and maintenance. One.com typically develop their own software and systems as this enables them to offer truly differentiated services with many unique features, at very competitive prices. This usually rules out many commercial products, as they cannot properly support and integrate into One.com’s sophisticated and highly customized platforms. […]

Can I haz secure email?

By | October 20th, 2016|Categories: Blog|Tags: , |

Halon CTO Anders Berggren at Netnod Autumn meeting 2016, speaking about DANE and secure email.

How to implement DMARC

By | October 11th, 2016|Categories: Blog|Tags: |

In one of our previous blogs we explained the importance and value with DMARC. This article will explain how to deploy DMARC with our Halon SMTP software. In addition to implementing this in your Halon, you need to be able to add text records to your domain’s DNS server for which you want to protect with DMARC. […]

How to test SMTP servers using the command-line

By | September 20th, 2016|Categories: Blog|Tags: , |

In certain situations it can be very helpful to be able to quickly check if a SMTP server is online and reachable, has support for TLS and that it’s working, test user authentication and measure transaction delays and throughput. All of this and more can be done quickly using the command-line. Here’s your guide! […]

Traveling from Ace to Monaco (editor)

By | August 16th, 2016|Categories: Blog|Tags: |

Microsoft revealed a project called “Monaco” in November 2013 as a part of the online version of Visual Studio. A few years later, the open source Visual Studio Code editor was released, which also used it as foundation. Finally, in June 2016, Microsoft released a standalone version of the Monaco Editor on GitHub. […]

When HSL got objects

By | June 28th, 2016|Categories: Blog|Tags: |

It’s time for yet another deep dive into our platform. This time we’re going to tell you about when and why HSL got classes with closures. It started when we revisited our MIME implementation. The MIME implementation was kind of basic, but served most people well. However, it could at the time only work on the top level MIME objects header and all MIME parts were simply addresses by IDs. Although the structure of MIME is highly nested with children and siblings and all MIME parts share the same features, there is a header and a body-part (which could be even more MIME parts). This data structure is ideal to be represented as objects in a tree structure; which got us started to sketch how we really wanted you to work with MIME objects. […]

Using reCAPTCHA to handle spam misclassification

By | May 19th, 2016|Categories: Blog|Tags: , , |

Today’s leading spam filter technologies offer a very high degree of accuracy. In this blog I’ll describe the current state of spam classification, and propose a pretty innovative method that can significantly improve both senders’ and recipients’ satisfaction (as well as reducing the burden on administrators and support staff) by enabling senders to report false positives if they pass a CAPTCHA test. Let’s start by familiarising ourselves with the history of anti-spam. […]