DKIM, which stands for DomainKeys Identified Mail, is an email validation system, which prevents email headers from being forged and email content from being modified. This is done by adding an electronic signature to each and every message sent from an address under a specific domain. The signature is generated based on a private encryption key that’s available on the SMTP email server and it can be verified with a public key, which is available in the global DNS database. In this way, any message with changed content or a spoofed sender can be recognized by email providers. This method will heighten your worldwide web security tremendously and you’ll know for sure that any e-mail message sent from a business associate, a banking institution, and so on, is an authentic one. When you send out messages, the recipient will also know for sure that you are indeed the one who has sent them. Any email that turns out to be bogus may either be labeled as such or may never end up in the recipient’s inbox, depending on how the given provider has decided to handle such messages.