MC220853 – Reminder: Office 365 ATP External email forwarding controls and policy change

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check before: 2020-08-28


Advanced Threat Protection - Office 365, Exchange


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As originally announced in MC218984 (July '20) automated external email forwarding is a tactic attackers use to exfiltrate data out of an organization. To counter that, we are updating our outbound anti-spam policies. First, we are providing a control to easily enable automatic external forwarding for select people in your organization. Second, we will change the ?Automatic? setting to block automatic external forwarding. Internal automatic forwarding of messages will not be impacted by this change. NOTE: No action is needed if you don't want to allow any users to automatically forward messages externally or if no one in your tenant is currently doing so. Additionally, we understand that some organizations already have users automatically forwarding messages outside the organization and we will provide additional time and communications to enable transition to the new policy controls. For these organizations we will communicate via Message center with more details on when the change will impact your specific tenant. Key points Microsoft 365 Roadmap ID 63831 Timing: September 1, 2020 Roll-out: tenant level Control type: admin control Action: review and assess by August 28, 2020

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In development

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Change type:
Admin impact, New feature, User impact

task type:
Action Plan For Change

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