DKIM, which is short for DomainKeys Identified Mail, is an email validation system, which obstructs email headers from being spoofed and email content from being tampered with. This is done by attaching an electronic signature to each email message sent from an address under a given domain name. The signature is created on the basis of a private cryptographic key that is available on the outgoing email server and it can be validated by using a public key, which is available in the global Domain Name System. In this way, any email message with edited content or a forged sender can be spotted by mail service providers. This technology will strengthen your web safety considerably and you will know for sure that any email message sent from a business collaborator, a banking institution, and so on, is a genuine one. When you send email messages, the recipient will also be sure that you are indeed the one who has sent them. Any email that appears to be phony may either be marked as such or may never appear in the receiver’s mailbox, depending on how the particular provider has decided to cope with such email messages.