What are SPF, DKIM, and DMARC?
Email remains the number one communication tool globally, with organizations relying on it heavily despite the rise in popularity of instant messengers and other communication tools. However, while email is familiar to almost every kind of Internet user, the ways in which it protects both senders and recipients from phishing attacks, spam, and other types of email fraud are less well known.
DKIM (DomainKeys Identified Mail), SPF (Sender Policy Framework), and DMARC (Domain-based Message Authentication, Reporting, and Conformance) are three technologies that are commonly used by ISPs (Internet Service Providers) to protect users from cyber threats and email fraud, improving the legitimacy of delivered emails and reducing the risk of in-transit interference.
What is email authentication?
Email authentication is typically achieved using cryptographic techniques, such as digital signatures and encryption, to verify the identity of the sender and to protect the message content from tampering. This process involves the use of several technologies, including DKIM, SPF, and DMARC, which work together to provide a comprehensive email authentication system.
When an email message is authenticated, it gives the recipient a high level of confidence that the message is legitimate and not spam or phishing. It also helps prevent spoofing, where an attacker impersonates a trusted sender, by ensuring the message originated from the claimed domain or IP address.
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Attackers leverage direct domain spoofing to trick your customers and partners, putting your brand reputation at risk. Complete visibility and governance across all email channels is critical to deterring fraud and protecting your brand.
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