DomainKeys Identified Mail, or DKIM, is a system for checking the genuineness of an email by using an electronic signature. When DomainKeys Identified Mail is enabled for a specific domain, a public cryptographic key is published to the global Domain Name System and a private one is kept on the email server. If a new email message is sent, a signature is generated using the private key and when the message is received, the signature is verified by the POP3/IMAP mail server using the public key. In this way, the receiver can easily tell if the email message is legitimate or if the sender’s email address has been spoofed. A discrepancy will occur if the content of the email message has been edited in the meantime as well, so DKIM can also be used to make sure that the sent and the delivered messages are identical and that nothing has been added or deleted. This validation system will strengthen your email security, as you can validate the genuineness of the important emails that you receive and your colleagues can do the same with the email messages that you send them. Based on the particular email provider’s policy, an email message that fails the test may be removed or may be delivered to the receiver’s mailbox with a warning symbol.

DomainKeys Identified Mail in Cloud Hosting

When you purchase one of the Linux cloud hosting that we’re offering, the DomainKeys Identified Mail functionality will be enabled by default for any domain name that you add to your shard hosting account, so you won’t have to create any records or to enable anything manually. When a domain is added in the Hosted Domains section of our in-house developed Hepsia Control Panel using our MX and NS records (so that the email messages associated with this domain name will be handled by our cloud web hosting platform), a private key will be generated straight away on our email servers and a TXT resource record with a public key will be sent to the Domain Name System. All email addresses created with this domain name will be protected by DomainKeys Identified Mail, so if you send email messages such as regular newsletters, they will reach their target destination and the recipients will know that the messages are authentic, because the DKIM functionality makes it impossible for unsolicited people to spoof your addresses.