All pages referring or tutorials for Microsoft 365.
MTA-STS is a standard for ensuring TLS is always used for email transmission. This increases security and data protection because emails cannot be read by a Man in the Middle. It works like this for inbound and outbound email to ensure security is applied to all of the messages processed Read more…
One day I came across an option in Microsoft 365 to disable the users’ self service trials. You must have seen it happening in your tenants, users with free licenses for Power Automate, Teams or Power BI. I will show you how to disable those and only let administrators buy Read more…
When deploying Microsoft Office apps to (pooled) Virtual Desktops, we mostly need to do some optimizations to the installation. We want to optimize performance on pooled and virtual machines, or maybe we want to enable shared computer activation because multiple users need the apps. In this guide I will show Read more…
When it comes to basic email security, we have 3 techniques that can enhance our email security and delivery by some basic initial configuration. Those are called SPF, DKIM and DMARC. This means, configure and mostly never touch again. These 3 techniques are: When using Microsoft 365 as your messaging Read more…
Microsoft has published a new command to completely disable the unsafe DirectSend protocol in your Microsoft 365 environment. In this guide I will explain what DirectSend is, why you should disable this and how we can achieve this. What is DirectSend? DirectSend (Microsoft 365) lets devices or applications (like printers, Read more…
Sometimes, we add a new domain to Microsoft 365 and we want to have a domain alias for multiple or every user. Logging in Exchange Online Powershell To configure a alias for every user, we need to login into Exchange Online Powershell: If you don’t have the module already installed Read more…
The Zero Trust model is a security model to enhance your security posture by using 3 basic principles, and segmenting aspects of your IT environment into pillars. The 3 primary principles are: At first, those terms seem very unclear to me. To further clarify the principles, i have added some Read more…
Recently, Microsoft announced the general availability of 2 new security protocol when using Microsoft 365 and the service Exchange Online in particular. SMTP DANE and DNSSEC. What are these protocols, what is the added value and how can they help you secure your organization? Lets find out. Domain Name System Read more…
Microsoft will sometimes “pause” tenants to reduce infrastructure costs. You will then get an error which contains “tenant dehydrated”. What this means and how to solve it, I will explain in this post. What is “Tenant dehydrated”? Microsoft sometimes will dehydrate Microsoft 365 tenants where things will not often change Read more…
Sometimes a company wants to receive all email, even when addresses don’t really exist in Exchange. Now we call this a Catch all mailbox, where all inbound email is being catched that is not pointed to a known recipient. Think of a sort of *@domain.com. In this guide I will Read more…