Source Viewer
The Source Viewer offers a quick, digestible view of which sources are actively sending mail on behalf of your domains, and whether or not the source has been configured to send DMARC compliant emails. You may have more than one domain using a common source. In this scenario, you should expand each section to understand the individual DMARC compliance rate by domain. This will help determine if any additional configuration is needed. To make the best use of the Source Viewer and activate a successful project, it’s imperative to understand the core DMARC principles of alignment and compliance.
A Source is either a server under your control or a third-party vendor that your organization has commissioned to send email on your behalf. The Source Viewer is driven by dmarcian’s powerful classification engine that processes the underlying DMARC data and provides users with a human-readable tag indicating which third-party platform is sending the mail. As with all DMARC projects, the goal is to increase the rate of DMARC compliance across authorized sources. This is achieved by configuring SPF and/or DKIM to align with your sending domain. This is how the outside world knows which sources you authorize to send email on your behalf and which ones you don’t.
DMARC data represents an independent audit trail of each of the Sources that has been observed to send from your domain (not a list of your authorized vendors). You may be surprised to learn about third-party vendors that have been sending on your behalf (Shadow IT). You should only authenticate your company’s verified Sources.