DKIM, which is an acronym for DomainKeys Identified Mail, is an authentication system, which obstructs email headers from being spoofed and email content from being manipulated. This is done by attaching an e-signature to each and every email sent from an address under a specific domain. The signature is created on the basis of a private key that’s available on the outgoing server and it can be verified with 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 spotted by mail service providers. This method will boost your worldwide web security enormously and you’ll be sure that any email message sent from a business partner, a bank, and so on, is genuine. When you send out email messages, the recipient will also be sure that you are indeed the one who has sent them. Any email that turns out to be forged may either be labeled as such or may never appear in the recipient’s inbox, depending on how the particular provider has decided to treat such emails.