No Longer Receiving Complaint Messages via SNS

1. Check SNS Subscription Ensure that your SNS topic subscription for "Complaint" notifications is still active and correctly configured:

Login to AWS Management Console. Navigate to SNS.

Check Subscriptions: Verify that the subscription endpoint for the "Complaint" notifications is correct and active.

2. Verify SES Notification Configuration

Ensure that Amazon SES (Simple Email Service) is still configured to send complaint notifications to the correct SNS topic:

Login to AWS Management Console. Navigate to SES. Check Identity Notification Settings: Go to the Email Addresses or Domains section. Select the identity you are using to send emails. Verify the SNS Topic for complaints is set correctly.

3. Inspect SNS Topic Policies

Ensure that the SNS topic policies allow SES to publish complaint notifications:

Navigate to SNS. Check Topics. Select your SNS topic for complaints and review the topic's Access Policy. Ensure that SES has the sns:Publish permission.

4. Review CloudWatch Logs

Check Amazon CloudWatch logs for any error messages or indications of issues:

Navigate to CloudWatch. Review Logs for SES and SNS for any recent errors or warnings related to complaint notifications.

5. SNS Delivery Status

Check the delivery status of SNS messages:

Navigate to SNS. Select the Topic for complaints. Inspect the Metrics for the topic to see if there have been any recent delivery failures.

6. Test with a Sample Complaint

You can test the complaint notifications by sending a test email that triggers a complaint:

Send an email to a known complaint address and verify if the complaint notification is received via SNS.