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> MTA-STS is a method to force MTA's to only use and accept TLS It's still advisory information, like SPF. The other end has to implement it.
by megous 8y ago
> MTA-STS is a method to force MTA's to only use and accept TLS
It's still advisory information, like SPF. The other end has to implement it.
- LeonM 8y agoThat is correct. SPF, DKIM, DMARC, MTA-STS and TLS-RPT are all opt-in features for the receivers. One could say that email is the ultimate legacy product of the internet.