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Oracle Linux: Connection to Relay Server Error "530 5.7.0 Authentication required (in reply to MAIL FROM command))" (Doc ID 2926533.1)

Last updated on FEBRUARY 12, 2023

Applies to:

Linux OS - Version Oracle Linux 7.9 with Unbreakable Enterprise Kernel [5.4.17] and later
Linux x86-64


While postfix attempts to send an email through a relay server produce errors in the /var/log/maillog file:



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