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18/09/2010

DomainKeys Identified Mail (DKIM) with Postfix (SMTP-Only)

Filed under: *NIX, PKI — Tags: , , , , , , — Sezgin Bayrak @ 22:37

spam emailsDKIM is a sender authentication scheme for signing messages in a way that these messages can be validated by the recipient side. DKIM, which is usually a part of MTA, is based on public-key cryptography therefore the validation process naturally depends on public-private key pair. Signer MTA affixes a digital signature into the message header by “DKIM Signature:” field which will then be used by the verifier side to recover the signer’s public key via DNS and complete the verification.

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