Network Management

Mailbox unavailable. The server response was: 5.7.1 Unable to relay Error in Orion Platform

The following error is found in the ActionsExecution log after a failed SMTP test: ERROR SolarWinds.Orion.Core.Actions.Impl.Email.EmailMethodInvoker - Test for SMTP server (exchange2012r2:25, SSL disabled, Authentication enabled) failed System.Net.Mail.SmtpFailedRecipientException: Mailbox unavailable. The server response was: 5.7.1 Unable to relay at System.Net.Mail.SmtpTransport.SendMail(MailAddress sender, MailAddressCollection recipients, String deliveryNotify, Boolean allowUnicode, Smtp

First published date

10/19/2018 2:02 AM

Last published date

10/12/2023 5:46 PM

Overview

The following error is found in the Alert Actions Execution log (c:\ProgramData\SolarWinds\Logs\Orion\ActionsExecution.log) after a failed SMTP test:

ERROR SolarWinds.Orion.Core.Actions.Impl.Email.EmailMethodInvoker - Test for SMTP server (SERVER:25, SSL disabled, Authentication enabled) failed
System.Net.Mail.SmtpFailedRecipientException: Mailbox unavailable. The server response was: 5.7.1 Unable to relay
 

Product section

Orion Platform

Cause

The error is due to a failed relay by the SMTP server.

Resolution

This issue is beyond the scope of SolarWinds Technical Support and we would advise checking with your mail services administrators.

Possible areas to check:

  • ensure that the SolarWinds server is set to be permitted to relay emails on the SMTP server
  • checking the SMTP server logs will give you a better idea of why the SMTP server is failing to relay