DKIM, which is an acronym for DomainKeys Identified Mail, is an email validation system, which hinders email addresses from being forged and email content from being modified. This is achieved by adding an electronic signature to each and every message sent from an email address under a given domain. The signature is created based on a private key that’s available on the outgoing SMTP server and it can be validated using a public key, which is available in the global Domain Name System. Thus, any email message with modified content or a spoofed sender can be spotted by email service providers. This method will increase your worldwide web safety greatly and you’ll be sure that any e-mail sent from a business collaborator, a banking institution, etc., is a genuine one. When you send out emails, the recipient will also know for sure that you are indeed the one who has sent them. Any email message that turns out to be bogus may either be marked as such or may never enter the recipient’s inbox, based on how the particular provider has decided to cope with such emails.