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      Defender for Office 365 Email URL Block

      This guide will show an administrator how to create a block for a specified URL, if this URL is detected in any emails they will be quarantined.

      Role Requirements

      Procedure Scope: Administrators

      Required Group Membership: Admin.Security

      Handbook Reference

      Package: TBD

      Domain: TBD

      Modifies: TBD

      O365 Email URL Block

      1. Navigate to the Tenant Allow/Block Lists – Microsoft Defender portal, select Block under the URLs
      2. In the following window, you can specify the URL including subdomains or paths (max limit of 20). Specify the timeframe as Never Expire and provide a reference point for fellow administration on why the block has been instated. Click Add.

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