This article covers the SPF authentication process for MailGuard and how it is managed in Valimail. While only one of the two authentication methods is required for an email to pass DMARC, our recommendation is to configure both whenever possible.

To setup SPF authentication for your MailGuard emails, please consult MailGuard's authentication documentation, here.

Once you establish that MailGuard is an authorized sender for your domain, you will need to add the service in your Enabled Senders.

You will find more detailed information on how to add a service for your domain in Valimail, here:

Note: We encourage you to use the comment section for any useful information about your sending service, such as the name of the service owner, change request ticket numbers, etc.