DKIM, which is an acronym for DomainKeys Identified Mail, is an email authentication system, which hinders email addresses from being spoofed and email content from being meddled with. This is achieved by attaching an electronic signature to each email message sent from an email address under a given domain name. The signature is created on the basis of a private encryption key that is available on the SMTP server and it can be verified by using a public key, which is available in the global Domain Name System. In this way, any email message with modified content or a forged sender can be recognized by email service providers. This technology will boost your web security tremendously and you’ll be sure that any e-mail message sent from a business ally, a bank, etc., is a genuine one. When you send email messages, the receiver will also know for sure that you are indeed the one who has sent them. Any mail that turns out to be bogus may either be labeled as such or may never appear in the recipient’s inbox, based on how the particular provider has decided to cope with such messages.