What is DKIM

DomainKeys Identified Mail (DKIM) is a system that allows email senders to digitally sign their messages. It helps protect against email spoofing by allowing the recipient's mail server to check the authenticity of the email.

Here's how it works:

  1. When an email is sent, the sender's mail server adds a digital signature to the email header. This signature is a long string of characters that is unique to the sender and the email message.
  2. When the email is received, the recipient's mail server checks the DKIM record of the domain in the email's "From" address to see if the digital signature is valid.
  3. If the signature is valid, it is a good indication that the email is legitimate and was sent by the domain it claims to be from. If the signature is invalid, the email may be marked as spam or rejected outright.

By using DKIM, email senders can help protect their domain from being used to send spam or phishing emails. It's important to note that DKIM is only one of several techniques used to prevent email spoofing and protect against spam, and it is not a foolproof solution. However, it is a useful tool in the fight against spam and can help improve the overall security and integrity of the email ecosystem.



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