Trends from the trenches of Internet traffic. Hackers, spammers and Internet abuse. IP address database. DNS sightings. Views and opinions expressed are my own. ~ Teri Radichel @teriradichel
Yahoo servers do not support end to end TLS. I tried to enforce this and various users complained that they could not email me due to this problem. I could email them so apparently Yahoo supports inbound but not outbound TLS.