DKIM, which is short for DomainKeys Identified Mail, is an email validation system, which blocks email headers from being forged and email content from being meddled with. This is achieved by attaching an e-signature to every email message sent from an email address under a particular domain. The signature is published on the basis of a private key that is available on the SMTP mail server and it can be validated with a public key, which is available in the global Domain Name System. Thus, any email message with changed content or a forged sender can be identified by email service providers. This technology will enhance your worldwide web security dramatically and you’ll be sure that any e-mail sent from a business collaborator, a banking institution, and so on, is legitimate. 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 appears to be bogus may either be labeled as such or may never enter the recipient’s mailbox, based on how the particular provider has decided to cope with such emails.