NOTE: The Assign mail acceptance and Assign mail rejection assignments are mutually exclusive. You can specify whether to accept or deny the recipient's message.
To modify mail acceptance for mail-enabled distribution groups
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In the Manager, select the Azure Active Directory > Mail-enabled distribution groups category.
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Select the mail-enabled distribution group in the result list.
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Select the Assign mail acceptance task to specify recipients whose messages are accepted.
- OR -
Select the Assign mail rejection task to specify recipients whose messages are rejected.
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Select the table containing the recipient from the menu at the top of the form. You have the following option:
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Mail-enabled distribution groups
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Dynamic distribution groups
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Mailboxes
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Mail users
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Mail contacts
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Office 365 groups
 
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In the Add assignments pane, assign recipients.
TIP: In the Remove assignments pane, you can remove assigned recipients.
To remove an assignment
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Select the recipient and double-click
.
 
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Save the changes.