DKIM, which stands for DomainKeys Identified Mail, is an email validation system, which impedes email headers from being spoofed and email content from being manipulated. This is achieved by attaching an e-signature to every email sent from an email address under a specific domain name. The signature is created on the basis of a private cryptographic key that’s available on the outgoing email server and it can be validated by using a public key, which is available in the global DNS database. In this way, any message with changed content or a spoofed sender can be spotted by mail service providers. This technology will strengthen your web safety markedly and you’ll be sure that any email message sent from a business associate, a banking institution, etc., is legitimate. When you send emails, the recipient will also know for sure that you are indeed the one who has sent them. Any mail that turns out to be fake may either be flagged as such or may never enter the recipient’s mailbox, based on how the particular provider has decided to deal with such email messages.