3 ms·
That 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 th
by LeonM 8y ago
That 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.