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How to activate DKIM authentication

This guide assumes you have created the email domain and DNS zone already.

Inside ISPConfig web hosting control panel perform these tasks:
  1. Go to Email module
  2. Click on the domain you want to activate DKIM
  3. Click on DomainKays Identified Mail (DKIM)
  4. Check the enable DKIM field
  5. Click on generate DKIM Private-key
  6. Click on Save button
Only if your domain is being hosted by other DNS servers (e.g: cloudflare), then copy and paste the DNS-Record.