DKIM, which is an acronym for DomainKeys Identified Mail, is a validation system, which obstructs email headers from being forged and email content from being tampered with. This is done by attaching an electronic signature to every message sent from an address under a particular domain. The signature is published based on a private encryption key that’s available on the outbound SMTP mail server and it can be verified by 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 spotted by email providers. This method will enhance your worldwide web safety substantially and you’ll be sure that any email message sent from a business partner, a banking institution, and so on, is genuine. When you send emails, the recipient will also know for sure that you are indeed the one who has sent them. Any email that turns out to be counterfeit may either be labeled as such or may never end up in the recipient’s inbox, depending on how the particular provider has chosen to cope with such messages.