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To request a custom DKIM signature, Contact Support and reference this article number. Please be prepared to share the following:
  • This article number
  • Your domain name, such as
After Support receives your information, they will enable DKIM for your organization and send a file with an extension of .pub. You then need to publish it through your domain name registrar, such as GoDaddy, Network Solutions, or Blackbaud cannot assist with publishing the DKIM signature file. If you need assistance, work with your registrar to publish it.

Note: If you require a custom DKIM signature for DMARC, leave the policy set to “none” until the implementation is completely finished and properly verified in tests.