DomainKeys Identified Mail

DomainKeys Identified Mail, or DKIM, is a system for validating the genuineness of an email by using an electronic signature. When DKIM is enabled for a specific domain, a public encryption key is published to the global DNS system and a private one is kept on the email server. When a new email is sent, a signature is generated using the private key and when the email message is delivered, the signature is authenticated by the incoming mail server using the public key. Thus, the recipient can easily know if the email message is authentic or if the sender’s address has been spoofed. A mismatch will appear if the content of the email has been modified in the meantime as well, so DKIM can also be used to ensure that the sent and the received messages are identical and that nothing has been attached or removed. This email authentication system will strengthen your email safety, since you can validate the legitimacy of the important emails that you get and your colleagues can do likewise with the email messages that you send them. Based on the given mail service provider’s adopted policies, a message that fails to pass the examination may be deleted or may emerge in the receiver’s inbox with a warning alert.