DKIM Record

DKIM (DomainKeys Identified Mail) is an email authentication protocol that allows a sender to verify that an email was sent by them and that the message content was not altered during transit.

DKIM works by adding a digital signature to the header of the email message. This signature is generated using a private key associated with the sender's domain and can only be decrypted using a public key that is published in the sender's DNS (Domain Name System) record. When an email is received, the recipient's email server can use the public key to verify the signature and ensure that the email was not tampered with during transit.

DKIM helps prevent email spoofing and phishing attacks by verifying the authenticity of the sender's email address and message content. It can also help improve email deliverability by reducing the likelihood of legitimate emails being marked as spam.

To set up DKIM, the sender generates a public and private key pair and publishes the public key in a TXT record in their DNS zone file. The private key is kept secure and used to generate the digital signature for outgoing emails. When an email is received, the recipient's email server can retrieve the public key from the sender's DNS record and use it to verify the signature.

Overall, DKIM is an important tool in email authentication and can help improve email deliverability while reducing the risk of email fraud.