Microsoft 365, Exchange Online, Security & Compliance, Guides & How-To, Compliance & Governance, Microsoft 365 Security, Mail Flow Tiago Carvalho Microsoft 365, Exchange Online, Security & Compliance, Guides & How-To, Compliance & Governance, Microsoft 365 Security, Mail Flow Tiago Carvalho

Exchange Online: Migrate SMTP AUTH from Basic Auth Before It Breaks

SMTP AUTH Basic Authentication in Exchange Online is being phased out. This guide shows how to find every sender still using it, choose the right migration path, and move to OAuth, SMTP Relay, HVE, or Graph API before it breaks production.

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