Book Image

Microsoft Office 365 Administration Cookbook

By : Nate Chamberlain
Book Image

Microsoft Office 365 Administration Cookbook

By: Nate Chamberlain

Overview of this book

Organizations across the world have switched to Office 365 to boost workplace productivity. However, to maximize investment in Office 365, you need to know how to efficiently administer Office 365 solutions. Microsoft Office 365 Administration Cookbook is packed with recipes to guide you through common and not-so-common administrative tasks throughout Office 365. Whether you’re administering a single app such as SharePoint or organization-wide Security & Compliance across Office 365, this cookbook offers a variety of recipes that you’ll want to have to hand. The book begins by covering essential setup and administration tasks. You’ll learn how to manage permissions for users and user groups along with automating routine admin tasks using PowerShell. You’ll then progress through to managing core Office 365 services such as Exchange Online, OneDrive, SharePoint Online, and Azure Active Directory (AD). This book also features recipes that’ll help you to manage newer services such as Microsoft Search, Power Platform, and Microsoft Teams. In the final chapters, you’ll delve into monitoring, reporting, and securing your Office 365 services. By the end of this book, you’ll have learned about managing individual Office 365 services along with monitoring, securing, and optimizing your entire Office 365 deployment efficiently.
Table of Contents (16 chapters)
Chapter 14: Appendix – Office 365 Subscriptions and Licenses

Preventing external senders from emailing internal Office 365 groups

This recipe will cover how an admin can prevent external parties from emailing internal Office 365 groups, which can have their own email address and shared mailbox.

Getting ready

You must be a global admin to perform these steps.

How to do it…

Update the -Identity parameter with the display name of the group you wish to change, and then run the following code snippet:

Set-UnifiedGroup -Identity "Test" -RequireSenderAuthenticationEnabled $true

How it works…

You've just protected an Office 365 group's inbox from unwanted external emails. Setting the -RequireSenderAuthenticationEnabled property on a group allows only internal users to send an email to that group. If external users send a message to the group's email address, that message will be rejected. Internal users are still able to send externally, unless other restrictions are put in place.