You people need to read your documentation when adding the service... Go to your O365 Admin panel, Go to Security and compliance, Select Threat Management, Select ATP anti-phishing, select default policy, Edit impersonation section, on the Add trusted senders and domains- add your trusted senders and domains according.y. Obviously do not add google, Hotmail, etc as a trusted domain. only specific senders.
You people need to read your documentation when adding the service... Go to your O365 Admin panel, Go to Security and compliance, Select Threat Management, Select ATP anti-phishing, select default policy, Edit impersonation section, on the Add trusted senders and domains- add your trusted senders and domains according.y. Obviously do not add google, Hotmail, etc as a trusted domain. only specific senders.