DKIM, which stands for DomainKeys Identified Mail, is an email authentication system, which impedes email addresses from being forged and email content from being manipulated. This is achieved by attaching an e-signature to each email message sent from an email address under a specific domain. The signature is generated on the basis of a private encryption key that’s available on the outbound mail server and it can be verified by using a public key, which is available in the global Domain Name System. Thus, any email with altered content or a spoofed sender can be recognized by email service providers. This approach will increase your web safety noticeably and you will be sure that any email message sent from a business associate, a bank, etc., is legitimate. When you send out messages, the receiver will also know for sure that you are indeed the one who has sent them. Any mail that appears to be fake may either be labeled as such or may never show up in the recipient’s inbox, based on how the particular provider has decided to cope with such email messages.