DKIM, which is an abbreviation for DomainKeys Identified Mail, is an email validation system, which stops email headers from being spoofed and email content from being meddled with. This is done by adding a digital signature to each email message sent from an email address under a given domain. The signature is published on the basis of a private key that is available on the outgoing mail server and it can be validated using a public key, which is available in the global Domain Name System. Thus, any email with modified content or a forged sender can be recognized by email providers. This technology will boost your web security dramatically and you’ll know for sure that any email message sent from a business partner, a banking institution, etc., is a genuine one. When you send email messages, the receiver will also be sure that you are indeed the one who has sent them. Any email that turns out to be phony may either be flagged as such or may never appear in the receiver’s inbox, depending on how the given provider has chosen to handle such messages.