SAP Knowledge Base Article - Preview

3743457 - How to prevent Microsoft 365 from blocking emails from partners and third‑party providers?

Symptom

How can I configure Microsoft 365 to ensure that messages sent from specific IP addresses or trusted service providers are not blocked?


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Environment

Microsoft Defender for Office 365 (Exchange Online Protection – EOP)

Keywords

Inbox, major, incident, notification, blacklist, trusted, domain, prevent, rejecting, fail , KBA , BNS-ARI-PCP-MF , Messaging Framework (Service) , How To

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