Block security and distribution list creation

September 13, 2019 | by iaur | posted as Adminstration, Microsoft 365

Distribution Group

Create a new role assignment policy, follow these steps:

  • Sign in to the Office 365 portal as an admin, click Admin, and then click Exchange to open the Exchange admin center.
  • In the left navigation pane click permissions, and then click user roles.
  • Click New (+)
  • 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 cleared.
  • Click Save.

From <https://docs.microsoft.com/en-us/exchange/troubleshoot/distribution-groups/prevent-users-create-manage-dg>

Security Group

  • Go to Groups
  • Go to General
  • Set “Restrict access to groups in the Access Panel” to “Yes”
Machine generated alternative text:
Self Service Group Management 
Ouuners can manage group membership requests in the Access Panel O 
Restrict access to Groups in the Access Panel O 
Security Groups 
users can create security groups in Azure portals O 
Ouuners wuho can assign members as group ouuners in Azure portals O 
Group that can manage security groups 
No group selected 
Office 365 Groups 
users can create Office 365 groups in Azure portals O 
Ouuners wuho can assign members as group ouuners in Azure portals O 
Group that can manage Office 365 groups 
No group selected

From <https://social.msdn.microsoft.com/Forums/en-US/4292064e-84d6-46a8-8373-a95aa1406bfe/block-access-for-guest-users-to-read-groups-on-httpsaccountactivedirectorywindowsazurecom?forum=WindowsAzureAD>