DKIM, which is an acronym for DomainKeys Identified Mail, is an email authentication system, which obstructs email addresses from being forged and email content from being manipulated. This is done by attaching an e-signature to each and every message sent from an email address under a specific domain. The signature is published on the basis of a private key that is available on the outgoing mail server and it can be verified using a public key, which is available in the global DNS database. Thus, any message with altered content or a spoofed sender can be identified by mail service providers. This technology will heighten your web safety significantly and you’ll be sure that any message sent from a business ally, a bank, etc., is a legitimate one. When you send out emails, the recipient will also know for sure that you are indeed the one who has sent them. Any email message that appears to be bogus may either be tagged as such or may never end up in the recipient’s mailbox, based on how the particular provider has chosen to handle such emails.