DKIM, which is an abbreviation for DomainKeys Identified Mail, is an email validation system, which hinders email headers from being spoofed and email content from being modified. This is achieved by adding an e-signature to every email sent from an email address under a given domain name. The signature is created based on a private encryption key that is available on the outgoing email server and it can be validated with a public key, which is available in the global DNS database. In this way, any email message with altered content or a spoofed sender can be spotted by email service providers. This technology will strengthen your worldwide web security noticeably and you will be sure that any email message sent from a business collaborator, a bank, etc., is genuine. When you send out messages, the recipient will also know for sure that you are indeed the one who has sent them. Any email message that appears to be counterfeit may either be tagged as such or may never appear in the receiver’s mailbox, depending on how the particular provider has decided to handle such messages.