To authorize Bluehost to send emails on your behalf you will have to include it in your SPF record. The SPF record mechanism used is shown below.
For more information on SPF set up for Bluehost please click on the button below.
If you are on VPS or Dedicated plan with Bluehost you will have to include your dedicated IP address in your SPF record instead. For information on SPF for VPS & Dedicated Plans please click on the button below.
For information on how to enable DKIM please contact Bluehost support.
Create a free OnDMARC account to test your configuration.