Resolving scheduler email SMTPSendFailedException: 451 #4.3.0 Server Error

Problem:
Some jobs are configured in JasperReports Server for sending reports as mails. Sometimes its results in error without sending the mail.

 

2023-10-26T07:00:04,709 ERROR ReportExecutionJob,JasperServerScheduler_Worker-2:457 - The job error notification was not completed. An error occurred while sending it. org.springframework.mail.MailSendException: Failed messages: com.sun.mail.smtp.SMTPSendFailedException: 451 #4.3.0 Server Error
; message exception details (1) are:
Failed message 1:
com.sun.mail.smtp.SMTPSendFailedException: 451 #4.3.0 Server Error

How can we resolve this error?

Cause:
SMTP error 451 usually indicates when the user exceeds the limits set on the email server for sending emails. The email server will not allow the user to send more emails than the limits set on the email server; these limits are set as daily or hourly limits.

Solution:
Please check this with your email server administrator and confirm if such an email limit is set on the user sending scheduled emails from Jaspersoft to resolve this error.
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Ref. Case #02218881