> On Mar 22, 2018, at 10:54 AM, Wietse Venema <wie...@porcupine.org> wrote: > > Currently, the Postfix SMTP client does a bunch of TLS initialization, > once per TLS session.
The expensive stuff for SSL_CTX happens only once in tls_client_init(). You're only looking at tls_client_start(), which uses a previously initialized context. -- Viktor.