You can't manage anti-phishing policies in standalone EOP PowerShell. To connect to Exchange Online PowerShell, see Connect to Exchange Online PowerShell. To go directly to the Anti-phishing page, use. You open the Microsoft 365 Defender portal at. What do you need to know before you begin? To increase the effectiveness of anti-phishing protection, you can create custom anti-phishing policies with stricter settings that are applied to specific users or groups of users. The policy is the default policy (the IsDefault property has the value True), and you can't delete the default policy.Any custom policies that you create always have a higher priority. The policy has the custom priority value Lowest that you can't modify (the policy is always applied last).The policy is applied to all recipients in the organization, even though there's no anti-phish rule (recipient filters) associated with the policy.For more information, see the Use Exchange Online PowerShell to configure anti-phishing policies section later in this article.Įvery organization has a built-in anti-phishing policy named Office365 AntiPhish Default that has these properties: In Exchange Online PowerShell, you manage the policy and the rule separately. When you remove an anti-phishing policy, the anti-phish rule and the associated anti-phish policy are removed.All other settings modify the associated anti-phish policy. When you modify an anti-phishing policy, settings related to the name, priority, enabled or disabled, and recipient filters modify the anti-phish rule.When you create an anti-phishing policy, you're actually creating an anti-phish rule and the associated anti-phish policy at the same time using the same name for both.The difference between these two elements isn't obvious when you manage anti-phishing policies in the Microsoft 365 Defender portal: The anti-phish rule: Specifies the priority and recipient filters (who the policy applies to) for an anti-phish policy.The anti-phish policy: Specifies the phishing protections to enable or disable, and the actions to apply options.The basic elements of an anti-phishing policy are: Standalone EOP organizations can only use the Microsoft 365 Defender portal.įor information about creating and modifying the more advanced anti-phishing policies that are available in Microsoft Defender for Office 365, see Configure anti-phishing policies in Microsoft Defender for Office 365. Organizations with Exchange Online mailboxes can configure anti-phishing policies in the Microsoft 365 Defender portal or in Exchange Online PowerShell. Custom policies always take precedence over the default policy, but you can change the priority (running order) of your custom policies. For greater granularity, you can also create custom anti-phishing policies that apply to specific users, groups, or domains in your organization.
For more information, see Spoof settings in anti-phishing policies.Īdmins can view, edit, and configure (but not delete) the default anti-phishing policy. In Microsoft 365 organizations with mailboxes in Exchange Online or standalone Exchange Online Protection (EOP) organizations without Exchange Online mailboxes, there's a default anti-phishing policy that contains a limited number of anti-spoofing features that are enabled by default.
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Learn about who can sign up and trial terms here. Did you know you can try the features in Microsoft 365 Defender for Office 365 Plan 2 for free? Use the 90-day Defender for Office 365 trial at the Microsoft 365 Defender portal trials hub.
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