DomainKeys Identified Mail, or DKIM, is a method for checking the genuineness of an email message by using a digital signature. When DKIM is activated for a certain domain, a public cryptographic key is published to the global DNS system and a private one is stored on the email server. If a new email message is sent, a signature is issued using the private key and when the email message is received, the signature is authenticated by the receiving server using the public key. In this way, the receiver can easily tell if the email is legitimate or if the sender’s address has been spoofed. A discrepancy will appear if the content of the email message has been altered in the meantime as well, so DomainKeys Identified Mail can also be used to ensure that the sent and the received messages are identical and that nothing has been added or erased. This email validation system will enhance your email security, as you can validate the legitimacy of the important emails that you get and your colleagues can do the exact same thing with the email messages that you send them. Based on the given mail service provider’s adopted policy, an email message that fails to pass the test may be removed or may end up in the receiver’s inbox with a warning symbol.

DomainKeys Identified Mail in Shared Hosting

If you host a domain name in a shared hosting account with us, all the obligatory records for using the DomainKeys Identified Mail option will be created by default. This will happen once you add the domain name in , as long as it also uses our NS records. A private cryptographic key will be generated on our mail servers, while a public key will be added to the DNS database automatically using the TXT resource record. In this way, you won’t need to do anything manually and you will be able to enjoy all the benefits of this email authentication system – your messages will be sent to any destination without being discarded and nobody will be able to send emails forging your addresses. The latter is truly important if the type of your web presence involves sending periodic offers or newsletters via email to prospective and current customers.