Mailjet Emails are not being sent or are bouncing back with an error.

Understanding Mailjet: A Powerful Email Communication API

Mailjet is a robust email communication API provider that allows businesses to send, receive, and track emails effortlessly. It offers a comprehensive suite of tools for email marketing, transactional emails, and more, making it a popular choice for developers and businesses alike.

Identifying the Symptom: Email Sending Issues

One common issue users encounter with Mailjet is the inability to send emails or receiving bounce-back errors. This can be a frustrating experience, especially when emails are critical to business operations.

Exploring the Issue: Error Code MJ-028

The error code MJ-028 indicates an 'Invalid Sender Domain'. This means that the domain from which you are attempting to send emails is not properly configured or verified in your Mailjet account. This misconfiguration prevents Mailjet from authenticating your emails, leading to delivery failures.

Why Domain Verification Matters

Domain verification is crucial as it ensures that emails are sent from a legitimate source, reducing the risk of spam and phishing attacks. It also improves email deliverability rates.

Steps to Resolve the Invalid Sender Domain Issue

To fix the MJ-028 error, follow these detailed steps:

Step 1: Verify Your Domain in Mailjet

1. Log in to your Mailjet account.
2. Navigate to the Sender Domains section.
3. Check if your domain is listed and verified. If not, click on 'Add Domain'.
4. Follow the on-screen instructions to verify your domain. This typically involves adding a TXT record to your domain's DNS settings.

Step 2: Configure DNS Settings

1. Access your domain registrar's DNS management console.
2. Add the TXT record provided by Mailjet to your DNS settings.
3. Ensure that the record is correctly formatted and saved.
4. Wait for DNS propagation, which can take up to 48 hours.

Step 3: Test Email Sending

1. Once your domain is verified, attempt to send a test email from your application.
2. Monitor the email logs in Mailjet to ensure successful delivery.

Additional Resources

For more detailed guidance, refer to Mailjet's support documentation or their blog for best practices in email configuration and management.

By following these steps, you can resolve the MJ-028 error and ensure your emails are sent successfully through Mailjet.