DKIM, which is an acronym for DomainKeys Identified Mail, is an email validation system, which impedes email headers from being spoofed and email content from being meddled with. This is achieved by attaching a digital signature to each and every email sent from an email address under a particular domain name. The signature is issued on the basis of a private encryption key that’s available on the outbound SMTP server and it can be validated by using a public key, which is available in the global Domain Name System. In this way, any email with altered content or a spoofed sender can be identified by email providers. This technology will boost your online safety tremendously and you’ll know for sure that any e-mail message sent from a business collaborator, a banking institution, and so on, is authentic. When you send email messages, the receiver will also know for sure that you are indeed the one who has sent them. Any email that appears to be fraudulent may either be marked as such or may never enter the receiver’s inbox, based on how the particular provider has decided to treat such messages.