New users forwarding email insight in the new EAC in Exchange Online

It's suspicious when new user accounts in your organization suddenly start forwarding email messages to external domains.

The New users fowarding email insight in the Insights dashboard in the new Exchange admin center (new EAC) notifies you when new users accounts in your organization are forwarding messages to external domains.

New domains being forwarded email insight in the Insights dashboard.

When you click View details, a flyout appears where you can find more details about the forwarded messages, including a link to the Auto forwarded messages report for more information.

Details flyout that appears after clicking View details in the New domains being forwarded email insight.

If you suspect the accounts have been compromised, see Responding to a compromised email account.

For more information about other mail flow insights in the mail flow dashboard, see Mail flow insights in the new Exchange admin center.