DKIM, which is short for DomainKeys Identified Mail, is an email authentication system, which hinders email headers from being spoofed and email content from being meddled with. This is done by adding a digital signature to each and every email sent from an email address under a particular domain. The signature is issued on the basis of a private key that is available on the outbound SMTP server and it can be verified using a public key, which is available in the global Domain Name System. Thus, any message with edited content or a forged sender can be recognized by email service providers. This technology will heighten your worldwide web safety significantly and you’ll be sure that any message sent from a business collaborator, a bank, etc., is a legitimate one. 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 fraudulent may either be flagged as such or may never be delivered to the receiver’s mailbox, based on how the particular provider has chosen to cope with such messages.