DKIM, which is short for DomainKeys Identified Mail, is an email authentication system, which hinders email headers from being spoofed and email content from being manipulated. This is achieved by attaching a digital signature to each email message sent from an address under a given domain. The signature is created based on a private 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. Thus, any email with altered content or a forged sender can be identified by email providers. This approach will enhance your web security greatly and you’ll know for sure that any email sent from a business partner, a bank, and so on, is a genuine one. When you send email messages, the receiver will also be sure that you are indeed the one who has sent them. Any mail that appears to be phony may either be marked as such or may never reach the recipient’s inbox, based on how the particular provider has chosen to handle such messages.