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An Author Domain Signature is a valid DKIM signature in which the domain name of the DKIM signing entity, i.e., the d tag in the DKIM-Signature header field, is the same as the domain name in the author address. This binding recognizes a higher value for author domain signatures than other valid signatures that may happen to be found in a message.
DMARC stands for Domain-based Message Authentication, Reporting and Conformance. It is a protocol that helps domain owners protect their email from spoofing and other cyber threats by checking the alignment of the From: field with other authenticated domains.
DKIM is an email authentication method that detects forged sender addresses and verifies the sender's domain. It adds a digital signature to each email message that can be verified by the recipient using the sender's public key in the DNS.
Learn about the techniques and protocols to verify the origin of email messages and combat spoofing, phishing, and fraud. Compare SPF, DKIM, and DMARC, and see how they work with SMTP and DNS.
Code signing is the process of digitally signing executables and scripts to confirm the software author and guarantee the code integrity. Learn how code signing works, what benefits it provides, and how to use it in different platforms and scenarios.
ARC is an email authentication system that allows intermediate servers to sign the original message's validation results. This helps receivers validate emails that fail SPF and DKIM checks due to modifications by intermediaries.
Ray Bradbury was an American author and screenwriter who wrote in various genres, including fantasy, science fiction, horror, and realistic fiction. He died of natural causes on June 5, 2012, at age 91, in Los Angeles, California.
Learn about the life and literature of Ernest Hemingway, a Nobel Prize-winning American novelist and journalist. Explore his seven novels, six short-story collections and two non-fiction works, such as The Sun Also Rises, A Farewell to Arms and For Whom the Bell Tolls.