To authorize Clever Elements to send emails on your behalf you will have to include it in your SPF record. The SPF record mechanism used for Clever Elements is shown below.

include:cemsc.net

For more information on setting up SPF for Clever Elements please click on the button below.

To configure DKIM you will have to create the following CNAME record in your DNS.

cemsc._domainkey 

pointing to dkim.cemsc.net

For more information please contact Clever Elements support. 

Create a free OnDMARC account to test your configuration.