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Sending Email Through Email Delivery via Postfix fails with "535 Authentication required" (Doc ID 2758234.1)

Last updated on DECEMBER 21, 2023

Applies to:

Oracle Cloud Infrastructure Email Delivery - Version N/A and later
Information in this document applies to any platform.


On : OCI Email Delivery Service

After configuring SMTP with postfix on an instance running Oracle Linux 7.8 following Integrating Postfix with Email Delivery

When trying to send a test email, below error occurs :




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