DKIM, which is an abbreviation for DomainKeys Identified Mail, is an email validation system, which prevents email addresses from being forged and email content from being modified. This is done by adding an e-signature to each email sent from an email address under a specific domain name. The signature is issued based on a private cryptographic key that’s available on the outgoing SMTP server and it can be validated using a public key, which is available in the global DNS database. Thus, any message with edited content or a forged sender can be identified by email service providers. This approach will strengthen your online security enormously and you will be sure that any e-mail sent from a business ally, a bank, and so on, is a genuine one. When you send out messages, the receiver will also know for sure that you are indeed the one who has sent them. Any email that appears to be forged may either be tagged as such or may never enter the recipient’s mailbox, based on how the given provider has chosen to deal with such emails.
