SPF
To authorize Pobox to send emails on your domain’s behalf you will have to include it in your SPF record. The SPF record mechanism used by Pobox is shown below.
include:pobox.com
For more information on SPF please click on the button below.
DKIM
To enable DKIM for your custom domain please click on the button below for instructions.
Create a free OnDMARC account to test your configuration.