How to Whitelist an email Domain in Microsoft 365
Open the Exchange Admin Center
Click on the mail flow drop down and select Rules
Add a new rule for Bypass Spam Filtering
From the “Apply Rule if” > Click the Drop Down menu and select the Sender > Domain is
Type the domain in the specify Domain and click the plus bottom to add the domain to your policy
Add additional domain´s here and click OK to Exist the Windows
In the “Do the following Field” > set the spam confidence level (SCL) to Bypass Spam Filtering Should Automatically be selected
Click Save to apply the policy
