Error Sending Email Notifications: 554 Relay rejected for policy reasons. None of the recipients for notification is valid. Notification will not be sent. Check that the recipients email addresses are valid (Doc ID 1900616.1)

Last updated on DECEMBER 02, 2019

Applies to:

Symptoms

On Oracle Applications 12.1.3 version, Workflow Mailer,
after configuring the Workflow Notification Mailer, one can send test notifications to email addresses which the domain is the same as the SMTP server's successfully.
but it fails to send test notifications to email addresses of external domains. (eg.email=<EMAIL>@<HOST>)

When attempting to send an email to external domains: email=<EMAIL>@<HOST> using Note 242941.1 8 a) and run command: rcpt to: email=<EMAIL>@<HOST>, the following error occurs:

3. Currently, the customer uses an Authentication Mechanism as :Login and when using the command: auth login, then rcpt to: email=<EMAIL>@<HOST>,
250 email=<EMAIL>@<HOST> Recipient gets an OK INSTEAD OF returning 554 Relay rejected for policy reasons.

However, it's not possible to remove the Authentication Mechanism for security considerations.

The issue can be reproduced at will with the following steps:
Send a test email to an external email address of different domain than the SMTP server.

Changes

Cause

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