4 ms·
Delivery via IPv6 still seems more stringent. IPv4 now requires "authentication" as well where previously only IPv6 did. Last I checked Google didn't use DANE,
by U8dcN7vx 3y ago
Delivery via IPv6 still seems more stringent. IPv4 now requires "authentication" as well where previously only IPv6 did. Last I checked Google didn't use DANE, preferring instead MTA-STS -- perhaps understandable for a giant web property.