What is 1. DMARC ,2. DKIM 3. SPF ?

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What is 1. DMARC ,2. DKIM 3. SPF ?
1.DMARC
It’s open E-Mail standard
DMARC is an open email authentication system that safeguards the email channel at the domain level.
2. DKIM
When employed in phishing, corporate email compromise (BEC), and other email-based attacks, email spoofing techniques are detected and prevented by DMARC authentication.
3. SPF is a widely used email authentication method. SPF protects your domain from spoofing and keeps receiving servers from marking your outgoing messages as spam. SPF specifies which mail servers are permitted to send email for your domain.
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Simple and clear information thanks for your explanation.

balakumaran
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Bro nalla explanation, inum nalla pannunga

Anandkumar-hkch
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Good explanation but background music is high

charulathams