What methods are available to allow for DMARC authentication

What methods are available to allow for DMARC authentication then if we allow Jotform to use our own SMTP servers? Is there a FAQ on setting up SPF records, or is there the allowance for DKIM signing?

Hello UnLitho,

Unfortunately we do not have options for DKIM signing or DMARC authentication. Do you mean to say that you want to use your own email address to send submission emails?

Yes it is possible to achieve your requirement by adding custom sender email in your account and set it as "Recipient Email" of your form's email alert. You may like to take a look at the following guide should help you:

https://www.jotform.com/help/244-How-to-Setup-SMTP-for-a-Form

https://www.jotform.com/help/238-How-to-Add-a-Custom-Sender-Address-to-an-Email-Alert

Thank you!