DKIM, which is an acronym for DomainKeys Identified Mail, is a validation system, which hinders email headers from being spoofed and email content from being manipulated. This is achieved by adding an electronic signature to each message sent from an email address under a certain domain. The signature is created based on a private cryptographic key that’s available on the outgoing SMTP mail server and it can be validated by using a public key, which is available in the global Domain Name System. In this way, any message with edited content or a spoofed sender can be identified by mail service providers. This approach will enhance your worldwide web safety tremendously and you’ll be sure that any email message sent from a business ally, a bank, etc., is an authentic one. When you send messages, the recipient will also know for sure that you are indeed the one who has sent them. Any email message that turns out to be fake may either be marked as such or may never be delivered to the receiver’s mailbox, based on how the given provider has chosen to handle such email messages.