Block security or distribution group creation in EXO


Microsoft 365 is an incredibly powerful tool for businesses of all sizes that allows for a vast array of features and functions to enhance the productivity and security of an organization. One of the most useful features in Microsoft 365 is its ability to create and manage block security and distribution lists.

This feature allows businesses to control who can access sensitive information and communications, as well as to manage the flow of emails among members of the organization. With the help of Microsoft 365’s block security and distribution list creation tools, businesses can easily create and maintain a secure environment for their data and communications.

In this guide, we will look at how block security and distribution list creation works in Microsoft 365, and the advantages that this feature provides.



Disable creation of Distribution Group

Create a new role assignment policy, follow these steps.

  1. Sign in to the Office 365 portal as an admin, click Admin, and then click Exchange to open the Exchange admin center.
  2. In the left navigation pane click permissions, and then click user roles
  3. Click New (+)
  4. Type a name for the new role assignment policy, and then click to select the options that you want. Make sure that the MyDistributionGroups check box and the MyDistributionGroupMembershipcheck box are unchecked.
  5. Click Save.


Disable creation of Security Group

  1. Go to the link below and access it using a global admin account
  2. Go to Groups

  3. Go to General

  4. Set Restrict access to groups in the Access Panel to Yes