You need to generate a pair of keys and to publish a TXT record on your DNS to enable DKIM authentication.

1. Login to your Email Service Provider as admin.

2. Look for the DKIM setup, likely to be in the "Security" or "Authentication" section.

3. Generate a DKIM Key directly form your Provider or use a DKIM Key generator.

4. Go to your domain provider (GoDaddy, Cloudflare, Namecheap, Gandi, etc.) and sign in.

5. Go to the page for updating your domain’s DNS records. It could be called "DNS Management", "Name Server Management", or "Advanced Settings".

6. Create a DNS TXT Record with the DKIM key generated in the previous step and the information given (Host Name, Record value, and leave TTL value by default).

7. When the DKIM record is published, wait for propagation (it can take up to 48 hours)

Don't hesitate to reach us on our live chat if you need more guidance to parameter DKIM for your domain.