DKIM, which is an abbreviation for DomainKeys Identified Mail, is an authentication system, which hinders email addresses from being forged and email content from being tampered with. This is done by adding a digital signature to every message sent from an address under a particular domain name. The signature is published on the basis of a private cryptographic key that’s available on the sending server and it can be validated with a public key, which is available in the global Domain Name System. In this way, any message with edited content or a forged sender can be spotted by email providers. This technology will heighten your worldwide web safety dramatically and you’ll know for sure that any e-mail message sent from a business collaborator, a bank, and so on, is a legitimate one. When you send out email messages, the receiver will also know for sure that you are indeed the one who has sent them. Any email that turns out to be fraudulent 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.