SMTP Permanent Error: 530 Client Was Not Authenticated To Send (Doc ID 2497432.1)

Last updated on MAY 16, 2020

Applies to:

Oracle Linux Cloud Service - Version Oracle Linux 6.10 and later
Information in this document applies to any platform.

Unable to send mail via Office365 SMTP server on port 25:

Testing with telnet:

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In this Document

Symptoms

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