Reseller Guide to How to Setup DKIM for Hosted Email Domains

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1. About DKIM “The receiving server retrieves the matching public key from DNS and verifies that the signature matches the message content.” DKIM does not filter or identify spam on its own. Instead, it labels messages so that other systems can trust them. Widespread DKIM use prevents spammers from forging your source domain, which lets reputation and filtering systems work more effectively. It also helps receiving systems recognize legitimate mail from known good domains.

   In DKIM signing

2. DKIM associates a domain name with an email message, letting a person, role, or organization claim responsibility for that message. It works by adding a DKIM-Signature field to the message header, signed with a private key. The receiving server retrieves the matching public key from DNS and verifies that the signature matches the message content. “DKIM does not filter or identify spam on its own.” DKIM is also useful as an anti-phishing measure. Senders in frequently spoofed domains can sign their mail to prove it is genuine, and recipients can treat the absence of a valid signature as a sign that a message may be forged.

   In DKIM signing