Modern Authentication vs Basic Authentication, SMTP AUTH

Deprecation of Basic authentication in Exchange Online In September 2021, The Microsoft announced that effective October 1, 2022, they will begin disabling Basic authentication for Outlook, EWS, RPS, POP, IMAP, and EAS protocols in Exchange Online. SMTP Auth will also be disabled if it is not being used. See full announcement: Basic Authentication and Exchange Online – … Read more

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