DKIM, which stands for DomainKeys Identified Mail, is an authentication system, which stops email headers from being forged and email content from being modified. This is achieved by attaching a digital signature to each message sent from an email address under a particular domain. The signature is published based on a private key that’s available on the SMTP server and it can be validated by using a public key, which is available in the global Domain Name System. Thus, any message with modified content or a spoofed sender can be recognized by email providers. This method will strengthen your worldwide web security dramatically and you will know for sure that any email sent from a business partner, a banking institution, and so on, is authentic. When you send out email messages, the recipient will also know for sure that you are indeed the one who has sent them. Any email that turns out to be phony may either be flagged as such or may never appear in the recipient’s inbox, depending on how the given provider has decided to deal with such messages.
