Today i am releasing a DMARC implementation guide that covers full implementation flow , best practices and common mistakes of a DMARC implementation. The Implementation guide also shows a new attacks abusing EAI (Link to post) to bypass DMARC and how to combat this. This guide will take email security for your domain to a higher level where it becomes…
Do you recognize that a lot of times when you search for tools on the internet they are either paid, don`t tell you the entire story, or are hosted by companies trying to market their product and sell you a service. Due to all these issues I started to build new tools to serve the community. I present the first…
On 27 December 2017 Microsoft announced that the support for EAI in email has been implemented. This means that the Microsoft cloud now supports EAI email addresses in outlook, email flow, connectors and rules. For now there won’t be any support for adding IDN domains to the platform itself. With this new functionality in Office 365 a new door opens…
Many customers I visit ask me: Do you know a good tool to generate DMARC reports? And the answer is always the same: Sorry I don’t know a end to end report generation tool that will meet your needs. There are some paid services where you can outsource this but they are pretty expensive and you lose control of the…
I Have just update the function Get-DC to version 1.1 . The function is now AD site aware and will still use your computers AD site if it is not specified. You can find the version changes below or on the download page. Function name : Get-Dc Authors : Martijn (scriptkiddie) van Geffen Version : 1.1 Version Changes: 10-10-2016 V0.1: Initial Script…
If you’re an Exchange Online or Exchange Online Protection (EOP) subscriber and you have configured connectors, this post contains important information that might impact your organization. To make sure that your mail flow isn’t interrupted, we strongly recommend that you read this post and take any necessary action at your earliest convenience. The change will impact you if one of…
The Preferred Architecture (PA) is the Exchange Engineering Team’s best practice recommendation for what we believe is the optimum deployment architecture for Exchange 2016, and one that is very similar to what we deploy in Office 365. While Exchange 2016 offers a wide variety of architectural choices for on-premises deployments, the architecture discussed below is our most scrutinized one ever….
During my session at the recent Microsoft Exchange Conference (MEC), I revealed Microsoft’s preferred architecture (PA) for Exchange Server 2013. The PA is the Exchange Engineering Team’s prescriptive approach to what we believe is the optimum deployment architecture for Exchange 2013, and one that is very similar to what we deploy in Office 365. While Exchange 2013 offers a wide…