DKIM, which is an acronym for DomainKeys Identified Mail, is an email validation system, which obstructs email addresses from being forged and email content from being meddled with. This is achieved by attaching an electronic signature to each and every message sent from an address under a given domain name. The signature is published based on a private encryption key that is available on the outbound SMTP server and it can be validated using a public key, which is available in the global Domain Name System. In this way, any email message with changed content or a forged sender can be spotted by email providers. This approach will strengthen your worldwide web safety considerably and you will know for sure that any message sent from a business partner, a banking institution, and so on, is genuine. When you send emails, the recipient will also be sure that you are indeed the one who has sent them. Any mail that turns out to be fraudulent may either be marked as such or may never show up in the recipient’s inbox, depending on how the particular provider has chosen to cope with such emails.