Oracle Linux: After OS Upgrade from OL7 to OL8 Postfix Service throws Error: "postfix/smtpd[xxxxx]: fatal: in parameter smtpd_relay_restrictions or smtpd_recipient_restrictions" (Doc ID 3004928.1)

Last updated on FEBRUARY 19, 2024

Applies to:

Linux OS - Version Oracle Linux 8.0 with Unbreakable Enterprise Kernel [5.4.17] and later
Linux x86-64

Postfix service unable to send mails and /var/log/maillog filled with messages like below:

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In this Document

Symptoms

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