Restrict Unknown Domains from Emailing to Team’s Channel Address

Hello ALL,

Restrict Unknown Domains from Emailing to Team’s Channel Address and this is one of the security measures to protect MS Teams environment in the cloud 

To increase the security of Microsoft Teams’ communication channels in your organisation, it’s important to restrict channel email messages to approved domains. 

This ensures that only trusted entities can send messages to your Teams channels, preventing potential security breaches and keeping your business communications safe. 

How to Control Who Can Send Email to Team’s Channel? 

Step 1: Go to the Microsoft Teams admin centre. 

Step 2: Navigate to Teams –> Teams settings. 

Step 3: The toggle under ‘Email integration’ lets you control whether Users can send emails to a channel email address. 

Step 4: If you have decided to allow users to send emails, enter the specific domains you wish to accept mail from in the ‘Accept channel email’.  

Step 5: Click Save. 

You can validate by sending an email from the approved external domains to the any channel email address

If any one sending the email to channel email address from the non approved domain list . They will get the below NDR - Non delivery Report