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Microsoft is making changes related to automatic email forwarding for ATP customers, here is what you need to know

In February this year I blogged about Stopping automatic email forwarding in your Exchange Online environment in a controlled way providing a structural way to disable automatic email forwarding within your organization, while still allowing exceptions.

This week Microsoft announced through the message center (MC220853) they are rolling out the External Email Forwarding Controls functionality for customers with Office 365 Advanced Threat Protection (ATP) licensed.

Update August 31, 2020: Microsoft has now communicated the following in the message center: For organizations that have some users externally forwarding prior to September 1st 2020 the setting “Automatic” will default to “On” and we will contact you separately when this will change for your tenant. The setting in my own tenant is still set to automatic though, perhaps it will change tomorrow (September 1). I’m for sure will test whether this has impact.

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Office 365 Templated policies and Preset security policies in Exchange Online Protection and Office 365 ATP

In my deep dive article on Office 365 Advanced Threat Protection (ATP) I mentioned that Microsoft provides best practices as described in the following article: “Recommended settings for EOP and Office 365 ATP security“. When implementing the settings in the article you either have the option to go for a “Standard” or “Strict” security level, and you can check your environment towards these best practices using the Office 365 ATP Recommended Configuration Analyzer (ORCA).

After returning from my holiday this year, I noticed a welcome addition to the Threat Management Policy page in the Office 365 Security & Compliance center called “Templated Policies”, for now the section Templated policies contains one section called “Preset security policies”

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Office 365 Advanced Threat Protection (ATP) deep dive

Around 5 years ago (April 2015) Microsoft announced Exchange Online Advanced Threat Protection (ATP), which was renamed to Office 365 Advanced Threat Protection around a year later.

By using Office 365 Advanced Threat Protection you can add additional protection to the email filtering service available in Office 365 called Exchange Online Protection (EOP).

In this article, I will explain the functionality of Office 365 Advanced Threat Protection, and I will share the lessons learned while implementing the solution at several of my customers. I’ll also try to include as much references to other articles or blogposts as possible hopefully providing you with enough information for you to start implementing Office 365 ATP as well.

This article covers the following topics:

Disclaimer: This post reflects the status of Office 365 Advanced Threat Protection as of April 28 2020. Functionality may change, even right after this post has been published.

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