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Clarify email criteria (#1873)
Co-authored-by: Kai Tebay <95620167+KaiTebay@users.noreply.github.com>
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@ -386,7 +386,8 @@ Email servers deal with a lot of very sensitive data. We expect that providers w
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- Protection of webmail with 2FA, such as TOTP.
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- Zero access encryption, builds on encryption at rest. The provider does not have the decryption keys to the data they hold. This prevents a rogue employee leaking data they have access to or remote adversary from releasing data they have stolen by gaining unauthorized access to the server.
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- [DNSSEC](https://en.wikipedia.org/wiki/Domain_Name_System_Security_Extensions) support.
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- No [TLS](https://en.wikipedia.org/wiki/Opportunistic_TLS) errors/vulnerabilities when being profiled by tools such as [Hardenize](https://www.hardenize.com), [testssl.sh](https://testssl.sh) or [Qualys SSL Labs](https://www.ssllabs.com/ssltest), this includes certificate related errors, poor or weak ciphers suites, weak DH parameters such as those that led to [Logjam](https://en.wikipedia.org/wiki/Logjam_(computer_security)).
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- No TLS errors or vulnerabilities when being profiled by tools such as [Hardenize](https://www.hardenize.com/), [testssl.sh](https://testssl.sh/), or [Qualys SSL Labs](https://www.ssllabs.com/ssltest); this includes certificate related errors and weak DH parameters, such as those that led to [Logjam](https://en.wikipedia.org/wiki/Logjam_(computer_security)).
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- A server suite preference (optional on TLSv1.3) for strong cipher suites which support forward secrecy and authenticated encryption.
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- A valid [MTA-STS](https://tools.ietf.org/html/rfc8461) and [TLS-RPT](https://tools.ietf.org/html/rfc8460) policy.
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- Valid [DANE](https://en.wikipedia.org/wiki/DNS-based_Authentication_of_Named_Entities) records.
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- Valid [SPF](https://en.wikipedia.org/wiki/Sender_Policy_Framework) and [DKIM](https://en.wikipedia.org/wiki/DomainKeys_Identified_Mail) records.
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