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

include:_spf.votervoice.net

Votervoice support DKIM signing for your custom domain.

For more information on how to set up SPF & DKIM for Votervoice please see click on the button below.

Create a free OnDMARC account to test your configuration.