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DomainKeys Identified Mail (DKIM)

lets an organization take responsibility for a message that is in transit. The organization is a handler of the message, either as its originator or as an intermediary. Their reputation is the basis for evaluating whether to trust the message for further handling, such as delivery. Technically DKIM provides a method for validating a domain name identity that is associated with a message through cryptographic authentication.[1]
is the mechanism for eliminating the possibility of man-in-the-middle content modification by using digital signatures generated from the sending mail server.[2]


  1., " DomainKeys Identified Mail (DKIM)" (full-text).
  2. NIST Special Publication 800-177, at vi.

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