What is DMARC, who uses it, and do I need it?

What is DMARC?

DMARC, also known as Domain-based Message Authentication, Reporting, and Conformance, is a DNS-based email security policy that standardizes the operation and interpretation of the well-known and widely-deployed email authentication protocols SPF and DKIM.

Who Uses DMARC?

Approximately 90% of US consumer mailboxes are protected by DMARC, and about 60% internationally.

I don’t think I’m being spoofed. Do I need DMARC? 

DMARC isn’t just about preventing spoofing. Ultimately, it’s about authenticating your email. Every sender in the world can benefit from fully authenticated email – mailbox providers want all email to be authenticated and are taking steps to both reward authenticated mail and “punish” unauthenticated email.

In order to make authentication easier, they’re offering a unique data source in the form of DMARC reports. The DMARC aggregate and forensic reports are an incredible source of insight into not only your own mailing program but also external threats to your brand.

Unfortunately, many email senders don’t take advantage of this data.

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