DKIM, which is an abbreviation for DomainKeys Identified Mail, is an email validation system, which hinders email addresses from being forged and email content from being manipulated. This is achieved by adding a digital signature to each and 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 server and it can be validated using a public key, which is available in the global DNS database. In this way, any message with changed content or a forged sender can be identified by email providers. This technology will heighten your worldwide web safety substantially and you’ll be sure that any e-mail message sent from a business associate, a banking institution, and so on, is an authentic one. When you send email messages, the receiver will also know for sure that you are indeed the one who has sent them. Any email message that turns out to be fake may either be labeled as such or may never be delivered to the receiver’s mailbox, based on how the given provider has decided to cope with such messages.