Email Transport Encryption STARTTLS vs. DANE vs. MTA-STS

This document deals with the encrypted transport of messages between two email servers. Encryption during transport is crucial for a basic level of security for the exchange of messages.The exchange of messages between an email client and a server or the end-to-end encryption of messages are not covered in this article. If the aim is to create a secure overall system, these aspects should be considered in addition to the recommendations in this article.

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