DKIM, which is an abbreviation for DomainKeys Identified Mail, is an email validation system, which prevents email addresses from being spoofed and email content from being manipulated. This is done by adding an e-signature to each and every email sent from an address under a certain domain. The signature is generated on the basis of a private cryptographic key that’s available on the outbound SMTP mail server and it can be verified with a public key, which is available in the global Domain Name System. Thus, any email message with edited content or a spoofed sender can be recognized by email providers. This approach will strengthen your worldwide web safety greatly and you’ll know for sure that any e-mail message sent from a business ally, a banking institution, and so on, is a genuine one. When you send out email messages, the recipient will also know for sure that you are indeed the one who has sent them. Any mail that appears to be bogus may either be tagged as such or may never be delivered to the recipient’s inbox, based on how the particular provider has chosen to handle such messages.