DKIM, which stands for DomainKeys Identified Mail, is an email validation system, which blocks email headers from being spoofed and email content from being tampered with. This is done by adding a digital signature to each and every message sent from an email address under a certain domain. The signature is generated based on a private cryptographic key that is available on the outgoing SMTP server and it can be verified using a public key, which is available in the global Domain Name System. Thus, any email message with edited content or a spoofed sender can be identified by mail service providers. This method will enhance your worldwide web safety markedly and you’ll be sure that any email message sent from a business collaborator, a bank, etc., is genuine. When you send 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 counterfeit may either be marked as such or may never show up in the receiver’s mailbox, based on how the given provider has chosen to handle such emails.