DKIM, which is an abbreviation for DomainKeys Identified Mail, is a validation system, which blocks email headers from being spoofed and email content from being meddled with. This is done by attaching an e-signature to each and every email sent from an email address under a given domain name. The signature is generated based on a private key that is available on the outgoing SMTP email server and it can be verified using a public key, which is available in the global DNS database. In this way, any email message with edited content or a spoofed sender can be identified by email providers. This approach will boost your worldwide web safety noticeably and you will be sure that any e-mail message sent from a business partner, a bank, etc., is a genuine one. When you send email messages, 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 forged may either be flagged as such or may never end up in the receiver’s inbox, depending on how the given provider has decided to handle such email messages.