DKIM, which is an abbreviation for DomainKeys Identified Mail, is an email authentication system, which stops email addresses from being forged and email content from being meddled with. This is achieved by adding a digital signature to each and every email message sent from an address under a particular domain name. The signature is created on the basis of a private cryptographic key that is available on the outbound mail server and it can be validated using a public key, which is available in the global DNS database. Thus, any email with edited content or a spoofed sender can be spotted by mail service providers. This approach will strengthen your worldwide web security significantly and you will be sure that any e-mail message sent from a business associate, a banking institution, and so on, is an authentic one. When you send out emails, the receiver will also be sure that you are indeed the one who has sent them. Any email message that turns out to be fake may either be marked as such or may never enter the recipient’s inbox, depending on how the particular provider has chosen to cope with such messages.