DKIM, which is short for DomainKeys Identified Mail, is a validation system, which prevents email headers from being spoofed and email content from being meddled with. This is done by adding an electronic signature to every email sent from an email address under a certain domain name. The signature is issued on the basis of a private encryption key that’s available on the SMTP server and it can be verified using a public key, which is available in the global Domain Name System. In this way, any message with changed content or a spoofed sender can be recognized by email service providers. This technology will boost your worldwide web safety enormously and you will be sure that any email message sent from a business ally, a banking institution, and so on, is authentic. When you send out emails, the receiver will also know for sure that you are indeed the one who has sent them. Any mail that appears to be counterfeit may either be labeled as such or may never end up in the receiver’s inbox, based on how the particular provider has decided to deal with such messages.