DMARC stands for Domain-based Message Authentication , Reporting , Conformance standard. DMARC is an email authentication protocol. It is use for protecting email spoofing attacks .
It is used for protecting email spoofing attacks by using SPF and DKIM mechanism .
Before this tutorial , I highly suggest to read How SPF Works & How DKIM Works .
What is Email Spoofing ?
Email spoofing is the act of sending an email that appears to come from a legitimate or trusted source, but is actually sent by an attacker or unauthorized person.
Mainly DMARC Record works on Two primary Records ( SPF & DKIM Record ) .
DMARC Record :
v=DMARC1; p=reject; rua=mailto:re+jwl6xh8@dmarc.postmakerapp.com,mailto:postmaster@expressvpn.com;
Explain this Record,
v = version
p = policy
rua = Receivers