DKIM, which is an acronym for DomainKeys Identified Mail, is a validation system, which prevents email addresses from being forged and email content from being manipulated. This is achieved by adding an electronic signature to every email message sent from an email address under a particular domain. The signature is published on the basis of a private key that’s available on the outbound email server and it can be verified with a public key, which is available in the global DNS database. In this way, any email with modified content or a spoofed sender can be identified by email providers. This technology will enhance your web security enormously and you’ll know for sure that any e-mail sent from a business ally, a banking institution, etc., is genuine. When you send emails, the receiver will also know for sure that you are indeed the one who has sent them. Any email that turns out to be fake may either be tagged as such or may never end up in the recipient’s inbox, depending on how the particular provider has decided to treat such messages.