Domain Key Identified Mail (DKIM) is an email authentication method used to verify the legitimacy of email messages. It helps ensure that the content of the message hasn’t been altered in transit and confirms the identity of the sender.In DKIM, the sender’s domain adds a digital signature to the email header. This signature is created using a private key, while the corresponding public key is published in the sender’s domain’s DNS records. When the email is received, the receiving server can retrieve the public key, allowing it to verify the signature and confirm that the email was indeed sent from the legitimate domain.While DKIM is primarily used to combat email spoofing and phishing attacks, its principles can also be relevant in the context of securing communication and transactions. By ensuring authenticity and integrity, DKIM helps build trust, which is a crucial element in any digital transaction or interaction.In summary, DKIM serves as a protective mechanism that enhances trustworthiness, ensuring that communications remain secure and authentic.