DKIM, which is an abbreviation for DomainKeys Identified Mail, is an email authentication system, which obstructs email headers from being forged and email content from being tampered with. This is done by adding an electronic signature to each and every message sent from an address under a certain domain. The signature is issued on the basis of a private key that is available on the outbound email server and it can be verified using a public key, which is available in the global DNS database. In this way, any message with modified content or a spoofed sender can be spotted by email providers. This technology will boost your web safety dramatically and you’ll be sure that any email message sent from a business associate, a banking institution, and so on, is authentic. When you send emails, the recipient will also know for sure that you are indeed the one who has sent them. Any email that turns out to be bogus may either be flagged as such or may never reach the receiver’s mailbox, based on how the particular provider has chosen to cope with such messages.