Email authentication is important for identifying and addressing spoofed messages. Authentication is a technique that provides verifiable evidence that an email originated from a legitimate source. This is an email method that proves who the message came from by verifying the ownership of the domain. The following authentication protocols are the top three ways to avoid spoofing attacks.
Sender Policy Framework (SPF): SPF records list IP addresses Cork Bicycle Rent zone that are allowed to send email on behalf of your domain. SPF helps mailbox providers and filtering systems recognize the difference between forged and legitimate email. SPF checks are performed based on the path that an email takes from its source to its destination.
Unfortunately, SPF authentication has some pitfalls when it comes to validating message sources. For example, if a message is forwarded, the SPF will be corrupted. It does nothing to protect the brand from cybercriminals who spoof the display name or Friendly-From address in the message (the address most visible to the recipient). This is where DKIM comes in.
DomainKeys Identified Mail (DKIM): DKIM is an authentication protocol that adds a digital signature to every email message sent. The signature is an encrypted header that is added to the message. MBP and the receiving server use DKIM to determine if a message was changed or changed during forwarding. If the message is signed using DKIM, the MBP that successfully validates the signature can use the information about the signer as part of its protection from spoofing and phishing.
However, DKIM does not tell MBP how to handle the message if the signature cannot be verified. MBP evaluates DKIM validation failures based on internal spam filter algorithms and other outbound reputation factors, and decides whether to place the email in the inbox or in the spam folder. The sender can implement DMARC to tell the MBP what to do if DKIM or SPF fails.