DKIM, which is short for DomainKeys Identified Mail, is an authentication system, which obstructs email headers from being forged and email content from being meddled with. This is done by adding a digital signature to each and every email sent from an email address under a given domain name. The signature is created on the basis of a private key that is available on the outbound SMTP email server and it can be validated with a public key, which is available in the global DNS database. Thus, any message with edited content or a spoofed sender can be recognized by email providers. This method will strengthen your worldwide web safety greatly and you’ll be sure that any e-mail message sent from a business associate, a banking institution, and so on, is a genuine one. When you send out emails, the receiver will also be sure that you are indeed the one who has sent them. Any email that turns out to be fake may either be labeled as such or may never reach the receiver’s mailbox, depending on how the given provider has decided to treat such messages.