The From Domain is the domain that appears in the visible “From” address of an email; for example, in From: sales@example.com, the From Domain is example.com.
It represents the organization or brand that the recipient sees as the sender. Because this is the domain that users recognize and trust, it plays a central role in email authentication and brand identity.
In the world of SPF, DKIM, and DMARC, the From Domain serves as the reference point for alignment and policy enforcement.
Here’s how it works:
If neither SPF nor DKIM aligns with the From Domain, the message fails DMARC authentication.
Because recipients make trust decisions based on the visible “From” address, cybercriminals often attempt to spoof the From Domain to impersonate legitimate brands.
Enforcing DMARC on your domain helps prevent this kind of abuse by ensuring that only authorized senders can use your From Domain in outbound mail.
A properly configured From Domain also improves deliverability. Mailbox providers reward domains with consistent authentication results and penalize those frequently associated with spoofing or spam.
DMARCeye helps organizations understand how their From Domains are being used (or misused) across the internet.
By analyzing DMARC reports, DMARCeye shows which sending services or IPs are using your From Domain, whether those messages pass authentication, and how well they align with your DMARC policy.
This visibility enables you to take corrective action, secure your domain identity, and progress confidently toward stronger enforcement without interrupting legitimate email traffic.
Sign up for a free DMARCeye trial today to secure your email domain.
To learn more about DMARC and DMARC-related terms, explore the DMARCeye Glossary.