How does MTA-STS improve email security?

By enforcing encryption and certificate validation MTA STS:

Prevents attackers from intercepting or altering messages.

Stops downgrade attacks where a server pretends TLS is unavailable also called STARTTLS stripping attacks.

Ensures confidentiality between servers.

It keeps the mail ship traveling through protected channels rather than open waters where pirates lurk.

Was this answer helpful?

Thanks for your feedback!