On 02/04/2019 17:03, Viktor Dukhovni wrote: > Does the server have a temporally stable ticket decryption key? > Is this Exim? Is the server's SSL_CTX persistent and shared > across multiple connections? Ah, right. Unlike GnuTLS, the STEK is tied to the SSL_CTX and, as you say, Exim initialises that fresh per connection. Rearchitecting that is more effort than it's worth spending on TLS 1.2, I think. -- Thanks, Jeremy