M365 Anti-Phishing/Impersonation - DKIM/SPF/Compauth checks with allowed domains

Jay Scovill 1 Reputation point
2021-03-17T14:18:38.453+00:00

If I configured a domain in the Anti-Phishing/Impersonation/Add Trusted Senders and Domains will Microsoft set the authentication headers to a fail if the trusted domain fails DKIM/SPF/COMPAUTH? Or will also bypass those checks when the domain is in the trusted list for impersonation? I want to allow a domain to bypass impersonation protection but I also want to make sure that is someone is impersonating that domain or otherwise fails authentication checks it will not continue to be allowed to impersonate a user from our domain.

Microsoft 365 Publishing
Microsoft 365 Publishing
Microsoft 365: Formerly Office 365, is a line of subscription services offered by Microsoft which adds to and includes the Microsoft Office product line. Publishing: The process of preparing, producing, and releasing content for distribution or sale.
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