DKIM, which is an abbreviation for DomainKeys Identified Mail, is an authentication system, which obstructs email addresses from being forged and email content from being meddled with. This is done by adding an e-signature to each and every email message sent from an email address under a particular domain. The signature is created on the basis of a private encryption key that is available on the outgoing server and it can be verified by using a public key, which is available in the global Domain Name System. In this way, any message with changed content or a spoofed sender can be recognized by email providers. This approach will increase your web safety greatly and you will know for sure that any email sent from a business collaborator, a banking institution, and so on, is an authentic one. When you send out email messages, the recipient will also know for sure that you are indeed the one who has sent them. Any email that appears to be counterfeit may either be labeled as such or may never be delivered to the recipient’s mailbox, based on how the given provider has decided to treat such email messages.