Failed email notifications.

If you're experiencing issues with failed email notifications, it's important to address them promptly to ensure that important communications are being delivered. Here are steps you can take to troubleshoot this issue:

1. Check Email Server Status:
   • Verify that your email server is operational and not experiencing any downtime or connectivity issues.
2. Review Email Configuration:
   • Double-check the email notification settings in the application or system. Ensure that the SMTP server, port, and authentication details are correct.
3. Check Spam Filters and Junk Folders:
   • Sometimes, email notifications may be classified as spam by email clients or servers. Check the recipient's spam folder and adjust spam filters if necessary.
4. Verify Recipient Email Addresses:
   • Confirm that the recipient's email addresses are entered correctly. A small typo can result in delivery failures.
5. Check for Blocked Ports or Protocols:
   • Ensure that the network firewall or email server settings aren't blocking the ports or protocols used for sending email notifications.
6. Test Email Sending:
   • Use a different email client or tool to send a test email from the same server. This will help identify if the issue is specific to the application sending the notifications.
7. Check SMTP Server Logs:
   • Review the SMTP server logs for any error messages or indications of why the emails are failing to be delivered.
8. Verify SMTP Credentials:
   • Ensure that the username and password used to authenticate with the SMTP server are correct.
9. Check Email Quotas:
   • Confirm that the sender's email account hasn't exceeded any sending limits imposed by the email provider.
10. Check DNS Settings:
    • Verify that the DNS settings of the server are correctly configured, including MX records, to ensure proper email delivery.
11. TLS/SSL Encryption:
    • Ensure that the appropriate encryption (TLS/SSL) is enabled for the email server. Some servers may require secure connections.
12. Monitor Email Queue:
    • If there's an email queue in the application, check if there are any messages stuck in the queue that haven't been sent.
13. Check for Blacklisting:
    • Ensure that the sending IP address or domain is not blacklisted by any email providers, as this can result in delivery failures.
14. Contact Email Service Provider:
    • If you're using a third-party email service, contact their support for assistance in diagnosing and resolving the issue.
15. Review Email Logs within the Application:
    • If the application has its own logging system, review it for any error messages related to email notifications.

If none of these steps resolve the issue, consider consulting with your IT team or a system administrator for further assistance. It's also a good practice to keep stakeholders informed about the issue and any progress made in resolving it.