DomainKeys Identified Mail, or DKIM, is a method for verifying the legitimacy of an email message using a digital signature. When DKIM is activated for a given domain name, a public cryptographic key is published to the global DNS database and a private one is stored on the email server. If a new message is sent, a signature is generated using the private key and when the email message is received, that signature is validated by the incoming email server using the public key. In this way, the receiver can easily discern if the message is legitimate or if the sender’s email address has been spoofed. A discrepancy will appear if the content of the email has been edited on its way as well, so DKIM can also be used to make sure that the sent and the received emails are identical and that nothing has been attached or deleted. This validation system will boost your email safety, as you can verify the authenticity of the important emails that you receive and your associates can do likewise with the messages that you send them. Depending on the given email service provider’s policy, an email that fails to pass the examination may be deleted or may show up in the receiver’s inbox with a warning.