Defender for Email Impersonation Allowance

This guide will show an administrator how to create an impersonation exception for a specified address or domain for an Anti-Phishing policy.

Role Requirements

Procedure Scope: Administrators

Required Group Membership: Admin.Security

Handbook Reference

Package: TBD

Domain: TBD

Modifies: TBD

Defender Email Phishing Sender Allowance

1. Navigate to the Anti-Phishing – Microsoft Defender portal, locate and select the Security Essentials Anti-Phishing Policy or the Equivalent Existing Custom Anti-Phishing Threat Policy. A flyout will be displayed showing all applicable security settings, locate the Phishing threshold & protection section and select the Edit action to begin the exception process.
   
2. From the Protection settings section we will want to select the Manage trusted sender(s) and domain(s) prompt under the Add trusted senders and domains subsection.
   
3. Under the manage prompt we can select either the Sender or Domain header followed by selecting the Add senders or Add domains action.
   
4. Here we will be able to utilize the text field under the Email section to supply the desired address or domain associated with the account we wish to allow the impersonation protection for. To finalize the address or domain addition select Add to generate the entry to the list below, if it is propagating select Add to continue.
   
5. You will return to the previous section, here we will want to verify that are previous addition is properly generating in the list, if the entry is there we will want to select Done to continue.
   
6. We will return back to the Edit page, their should be an incremental change to the Manage # of trusted sender(s) and domain(s) prompt, if the changes have been reflected here. Select Save to finalize the impersonation allowance process.
   

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