What Is DMARC?

What Is DMARC?

DMARC was introduced in 2012 as an email authentication protocol to reduce the risk of cyber-attacks. It is considered to be an industry standard for email verification to prohibit attacks which are malicious emails sent using a counterfeit address

The purpose to generate DMARC record is basically for:

  • Commanding recipient server to either approve the message to deliver or quarantine the message or reject the message.
  • Send reports to email addresses with data regarding all messages sent from a domain.

 

How Does DMARC Record Work?

To create a DMARC record is not a laborious task if it is implemented with the right tool. DMARC records are published in DNS with subdomain label _dmarc, such as: _dmarc.abc.com. Furthermore, this is compared to DKIM at selector._dmoinkey.abc.com and SPF at abc.com.

The TXT resource records consist of name=val

DMARC stands for Domain-based Message Authentication, Reporting and Conformance.

It is a protocol that was built on top of the existing protocols SPF and DKIM.


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