This check, to see if a message was sent securely, is fairly easy to do by looking the the raw headers of the email message in question. For example, banks, health care organizations under HIPAA, and other security-aware institutions have a requirement that email be secured at least by TLS encryption from sender to recipient.Įmail should always be transmitted with this basic level of email encryption ensure that the email message content cannot be eavesdropped upon.
Frequently, we are asked to verify if an email that someone sent or received was encrypted using SMTP TLS while being transmitted over the internet.
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