DKIM, which stands for DomainKeys Identified Mail, is an authentication system, which hinders email headers from being forged and email content from being tampered with. This is achieved by adding a digital signature to each message sent from an address under a specific domain name. The signature is generated based on a private encryption key that’s available on the SMTP mail server and it can be verified with a public key, which is available in the global DNS database. In this way, any email message with modified content or a forged sender can be identified by mail service providers. This approach will enhance your online safety considerably and you will know for sure that any e-mail sent from a business partner, a bank, and so on, is an authentic one. When you send emails, the recipient will also know for sure that you are indeed the one who has sent them. Any email message that turns out to be fraudulent may either be flagged as such or may never be delivered to the recipient’s mailbox, based on how the particular provider has decided to cope with such emails.
