If you suspect that your email marketing campaign has been compromised by DNS spoofing, take the following steps:
Immediately Inform Your Audience: Notify your subscribers about the potential compromise and advise them to ignore any suspicious emails. Contact Your DNS Provider: Report the issue to your DNS provider to investigate and resolve any tampered records. Update Security Protocols: Review and update your email authentication protocols, such as SPF, DKIM, and DMARC, to enhance security. Conduct a Security Audit: Perform a thorough security audit to identify any vulnerabilities and implement necessary measures to prevent future attacks.