Quick tips to limit sending mail to the wrong recipient

Embarrassing The Dutch Data Protection Agency (Dutch: Autoriteit Persoonsgegevens) is responsible for the supervision of correct handing of personal data. This agency must be informed when there is a breach with personal data. It’s the agency that has its duties described within GDPR. So, it is extra painful when they themselves are responsible of a data leak. Over a year ago they mailed a press release (link to article in Dutch) to several journalists but used the Carbon Copy (or

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How To: Exchange Authentication Policies

There are several ways how you can protect and limit access to Exchange Online. Conditional Access, Client Access Rules, the older ActiveSync Device rules and, the topic of this post, Authentication Policies. These policies are available in Exchange Online and Exchange Server 2019 since CU2. This article will show you how to implement this. Why use Authentication Policies? Authentication Policies only do one thing: enabling or disabling legacy or basic authentication (I use both terms) on protocols used by Exchange

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Exchange Server 2019 Preview is available!

Today the Microsoft Exchange Product Group announced the release of the Exchange Server 2019 public preview! They also lifted the veil on some of the new features/capabilities etc. of this new major build of Exchange Server. Where can I download the Preview bits? Click here to download Exchange Server 2019 Preview. Warning: These are Preview bits and are not meant to be used in a production environment (not even as a added Exchange server!). Use a lab environment to test

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I will be speaking at ExpertsLive NL 2018!

And some other news dropped in my mailbox this week: I will be speaking together with Jetze Mellema at ExpertsLive NL 2018 on 19th June! During that session we will talk about Exchange migrations; "Destination unknown, migrating mailboxes from somewhere to anywhere". What will we be speaking about exactly? “Migrating mailboxes. Something every Exchange admin has done. Whether it be from legacy to a more modern version of on-premises Exchange, Cross-forest, to the cloud or even from other groupware solutions.

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I will be speaking at the European Collaboration Summit 2018

Some exciting news! I’ll be speaking at the European Collaboration Summit 2018 in Mainz, Germany on May 28-30. My session is “Securing Exchange Online” and during that hour I will go through the capabilities of Exchange Online (Office 365) to further secure your email data and mail flow based on up-to-date know-how. It’s a topic I like, is quite relevant and popular, I also have to update my session every time with new information and considerations. The Summit itself looks

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Free community event in Maarssen (NL) this Thursday evening

What? A free community event in a first collaboration between Dutch and Belgian Exchange, Skype and Office 365 experts. There will be two sessions, but before and after sessions you are free to talk with any of them about Exchange, Skype for Business/Teams and Office 365. When? This Thursday evening starting at 18:00. Where? Maarssen (near Utrecht) at the Fujitsu office. Who? MVPs like Jaap Wesselius, Dave Stork, Michel de Rooij, Steven Van Houttum and Michael Van Horenbeeck along with

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Office 365 to enforce TLS 1.2 per October 15, 2020

Update 21 July 2020 Microsoft has set a new date for the deprecation of TLS1.0 and 1.1, after a previous postponement due to the pandemic. You can find it in the Microsoft 365 Message Center message MC218794, which also references this Docs article. From October 15, 2020 onward, Microsoft will gradually enforce TLS1.2 on Office 365 services. Note that this enforcement change will take to roll-out to every tenant etc., so you might not see it immediately. I hope everybody

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I'll be speaking at E-Communications & Collaboration Day 2017 (BE-COM.eu) on May 3rd 2017

In a few weeks, I’ll be travelling to Novotel Leuven in my neighboring country Belgium for the E-Communications & Collaboration Day 2017, a full-day (May 3rd 2017) of expert presentations and content about Office 365, Exchange, Skype for Business and related technologies. During this day, I will be presenting “Securing Exchange Online”: In this session, Dave Stork will go through the capabilities of Exchange Online (Office 365) to further secure your email data and mail flow. Questions like: •    How

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Can I place my Exchange hybrid management server in Azure and use Azure Domain Services?

As some might know (although I and others have to repeat this regularly…), if you enable directory synchronization from your on-premises Active Directory (AD) and you migrate all you Exchange mailboxes to Exchange Online you still require an Exchange server to manage mail(box) objects. It is the only supported solution, even though some use third party tooling or ADSIedit. Luckily this managing Exchange server doesn’t require the same amount of resources compared to Exchange serves hosting actual production mailboxes. In

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Practical PowerShell Exchange Server 2016 aka Writing a book

Some of you may have wondered why I was somewhat quiet. The reason was that during the last year (and a half?) I was writing a book with MVP Damian Scoles. That book is now available as an PDF and Apple iBook! The physical paperback is now also available in our shop and includes a PDF and ePub version. Other eBook formats (Amazon, Kobo, Nook etc.) will follow soon as well. Damian and I decided to keep the whole process

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