DKIM, which stands for DomainKeys Identified Mail, is a validation system, which impedes email headers from being spoofed and email content from being tampered with. This is done by adding an e-signature to each email message sent from an address under a specific domain name. The signature is created based on a private encryption key that’s available on the SMTP server and it can be verified by 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 recognized by email service providers. This technology will boost your worldwide web safety significantly and you will know for sure that any email message sent from a business partner, a banking institution, etc., is authentic. When you send emails, the receiver will also be sure that you are indeed the one who has sent them. Any email message that appears to be fake may either be tagged as such or may never enter the receiver’s inbox, depending on how the given provider has decided to deal with such messages.