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Email authentication
ARC
A comprehensive collection of questions and answers about ARC email authentication from email marketers, experts and technical documentation.
What is the purpose of the ARC 'a=' tag?
Does ARC require a DNS record for setup?
What is the 'd=' tag in an ARC-Seal header?
What ARC header indicates the chain of authentication results?
What are the three main ARC header fields?
Does ARC address issues with mailing lists and forwarders?
Does ARC prevent message alteration after signing?
What is the 'bh=' tag in an ARC-Message-Signature header?
Does ARC require a private key for signing?
What ARC header contains the list of signed header fields?
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