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How Does MTA-STS Improve Your Email Security?

30
Aug
2021
How Does MTA-STS Improve Your Email Security?

image credit: vecteezy

Simple Mail Transfer Protocol or SMTP has easily exploitable security loopholes. Email routing protocols were designed in a time when cryptographic technology was at a nascent stage (e.g., the de-facto protocol for email transfer, SMTP, is nearly 40 years old now), and therefore security was not an important consideration.

As a result, in most email systems encryption is still opportunistic, which implies that if the opposite connection does not support TLS, it gets rolled back to an unencrypted one delivering messages in plaintext.

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