In order to authenticate your Sendreach campaigns the first step would be to create a sending domain in Sendreach.
Once the domain is added the system will generate the necessary SPF and DKIM records that you will have to create in your DNS in order to start sending DMARC compliant emails.
For instructions on how to Add your domain, Generate the SPF and DKIM records and finally Verify your domain in Sendreach please click on the button below.
Create a free OnDMARC account to test your configuration.