How to Fix a DKIM 'none' or 'fail' result

Here is how to fix a DKIM 'none' or 'fail' result.

The steps

Publish the DKIM public key your sender provides, use the correct selector, and ensure the signing domain aligns with your From address.

The foundation

• SPF, DKIM, DMARC on your domain.
• A dedicated, warmed IP.
• Clean lists and fast bounce/complaint handling.

How Rainmail helps

Rainmail sends from your own domain on a dedicated, isolated IP with SPF, DKIM, DMARC, reverse-DNS and managed warm-up handled for you, plus an AI watching list health and deliverability — and it welcomes senders SES, SendGrid and Mailchimp reject, from $8. Run the free checker or see plans.