"How do I resolve the '535 5.7.139 Authentication unsuccessful' error when using Nodemailer with M365"

MAZEED 1 Reputation point
2023-06-16T10:42:05.62+00:00

"How do I resolve the '535 5.7.139 Authentication unsuccessful' error when using Nodemailer with M365"

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  1. Amit Singh 4,971 Reputation points
    2023-06-20T07:15:42.84+00:00

    Please refer to this link and check Error: Authentication unsuccessful Article below points.

    Point 3 (Azure Security Defaults) and 

    Point 4 - Conditional Access policy)

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