TDMARC is an analytical tool that helps you secure and monitor your domain. It lets you check the different email sources which are utilizing your domain as well as which of these sources are sending spoofed emails from your domain. It also analyzes the SPF and DKIM records of that source. TDMARC calculates the DMARC compliance of the outbound emails sent through each source.
The receiving server matches the SPF record of the Return-Path (also known as SPF domain) of an email to its IP address. If it checks out, the email receives SPF authentication (represented in the SPF Result column). Similarly, the server also checks for the email’s DKIM domain to provide authentication (represented in the DKIM Result column).
Based on the DMARC configuration applied to the FROM domain and the verification of the SPF and DKIM domains of the outbound emails, DMARC checks for your domain’s SPF and DKIM alignment.
Relaxed SPF Alignment (aspf=r)
Strict SPF Alignment (aspf=s)
This similar alignment rule is applied for DKIM as well.
TDMARC compiles all this data of all your outbound emails from a particular source to show easily understandable colour-coded results, indicating the DMARC compliance of the emails sent through that source.