What is DKIM?
DomainKeys Identified Mail (DKIM) is an email authentication method that allows an organization to claim responsibility for a message in a way that can be validated by the recipient. It works by adding a digital signature to the email's header, which receiving servers can use to verify that the email was actually sent by the domain it claims to be from.
What are DKIM Failures?
DKIM failures occur when the receiving server is unable to verify the DKIM signature in the email header. This can happen for a variety of reasons, including incorrect DKIM setup, changes to the email content after signing, or issues with the DNS records.
Common Causes of DKIM Failures
Incorrect DKIM Setup: If the DKIM records are not set up correctly in your DNS, the receiving server will not be able to verify the signature.
Email Content Alteration: If the email content is modified after being signed, the DKIM signature will no longer match, resulting in a failure.
Expired Keys: DKIM keys can expire or be revoked without updating the DNS records, leading to verification failures.
DNS Propagation Delay: Changes to your DNS records may not be immediately visible, causing temporary DKIM failures.
How to Troubleshoot DKIM Failures
To troubleshoot DKIM failures, start by checking your
DNS records to ensure that the DKIM record is correctly set up. You can use online tools to validate your DKIM setup. Next, review the email content to ensure it has not been altered after signing. Finally, check for any expired keys or recent changes to your DNS that may not have propagated yet.
Preventing DKIM Failures
To prevent DKIM failures, regularly audit your DKIM setup and ensure that your DNS records are up-to-date. Use consistent processes for email creation and avoid making changes to the email content after it has been signed. Additionally, monitor your email deliverability and authentication reports to catch and address issues early.The Impact of DKIM Failures on Email Marketing
DKIM failures can have a significant impact on your email marketing campaigns. Emails that fail DKIM checks are more likely to be flagged as spam, reducing your
open rates and
click-through rates. Persistent DKIM issues can damage your
sender reputation, leading to long-term deliverability problems.
Conclusion
In the context of email marketing, ensuring that your DKIM setup is accurate and functional is essential for maintaining high deliverability and protecting your brand. Regular audits, proper email handling, and monitoring are key to preventing DKIM failures and ensuring the success of your email campaigns.