DKIM, which is short for DomainKeys Identified Mail, is an email authentication system, which stops email addresses from being forged and email content from being manipulated. This is achieved by adding an e-signature to every email sent from an email address under a particular domain name. The signature is created based on a private key that’s available on the outbound mail server and it can be validated using a public key, which is available in the global DNS database. Thus, any email with changed content or a forged sender can be spotted by email service providers. This approach will strengthen your web safety markedly and you will be sure that any email sent from a business partner, a banking institution, and so on, is a genuine one. When you send messages, the receiver will also be sure that you are indeed the one who has sent them. Any mail that appears to be bogus may either be tagged as such or may never show up in the recipient’s inbox, based on how the particular provider has chosen to cope with such messages.