DKIM, which is an abbreviation for DomainKeys Identified Mail, is an email validation system, which obstructs email addresses from being spoofed and email content from being modified. This is achieved by adding an e-signature to each email message sent from an email address under a particular domain. The signature is issued based on a private key that’s available on the outbound email server and it can be validated by using a public key, which is available in the global DNS database. In this way, any message with changed content or a forged sender can be identified by mail service providers. This approach will boost your worldwide web security enormously and you’ll be sure that any e-mail message sent from a business partner, a banking institution, etc., is legitimate. When you send email messages, the receiver will also know for sure that you are indeed the one who has sent them. Any email message that appears to be phony may either be labeled as such or may never appear in the receiver’s inbox, based on how the given provider has decided to treat such email messages.