Microsoft Defender for Office 365: Tenant Allow/Block List will support blocking top-level domains and subdomains
Microsoft Defender for Office 365 will soon allow blocking of top-level domains and subdomains via the Tenant Allow/Block List, rolling out from late May to late June. This update applies to customers with Microsoft Exchange Online Protection and Microsoft Defender for Office 365 Plan 1 or Plan 2. No admin action is required before the rollout.


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