DKIM, which stands for DomainKeys Identified Mail, is a validation system, which prevents email headers from being forged and email content from being tampered with. This is done by adding an electronic signature to each and every email message sent from an email address under a given domain. The signature is created on the basis of a private key that is available on the outgoing SMTP email server and it can be verified by using a public key, which is available in the global Domain Name System. In this way, any email message with altered content or a forged sender can be recognized by email providers. This technology will heighten your worldwide web security tremendously and you’ll be sure that any message sent from a business collaborator, a banking institution, and so on, is authentic. When you send out email messages, the recipient will also be sure that you are indeed the one who has sent them. Any email message that appears to be fake may either be labeled as such or may never appear in the recipient’s inbox, based on how the given provider has chosen to handle such messages.