DKIM - Summit Technology | Utah’s Leading Managed IT Support Partner

TL;DR:

Imagine sending a letter through the mail. You want to make sure that the letter is really from you and hasn’t been tampered with. DKIM (DomainKeys Identified Mail) is like putting a special seal on your letter that only you can create. When the recipient gets the letter, they can check this seal to confirm it’s really from you and that no one has changed the contents. This helps prevent bad actors from pretending to be you and sending fake emails.

Details For the Techies:

DKIM (DomainKeys Identified Mail) is an email authentication method designed to detect forged sender addresses, commonly used in phishing and email spam. It works by adding a digital signature, linked to a domain name, to each outgoing email message. This signature is created using a private key, and the recipient can verify it using the sender’s public key, which is published in the DNS. A valid DKIM signature ensures that the email has not been altered since it was sent and confirms that it was authorized by the domain owner. DKIM signatures are typically handled by the email infrastructure and are not visible to end-users. This method is crucial for maintaining email integrity and trustworthiness, as it helps prevent email spoofing and ensures that legitimate emails are delivered securely.

For more detailed information, you can refer to the Wikipedia article on DKIM.

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