Wietse Venema <wie...@porcupine.org> writes: > micah anderson: >> Eray Aslan <er...@a21an.org> writes: >> >> > On Wed, Dec 19, 2018 at 02:36:50PM -0500, Viktor Dukhovni wrote: >> >> If there are no objections, I can change the default to "may" when >> >> TLS is compiled in. >> > >> > No objections for setting smtp_tls_security_level. Thanks for your >> > effort. >> >> I just wanted to circle back to this thread - it seems like nobody had >> any objections to this change, and there were even proposed changes >> sent, but I don't see that it ever got integrated? > > What was the idea: change the default when built with TLS support?
That is right, change it to 'may', since it requires no certificates to be generated. Because it will do opportunistic + fallback if things don't work, it seems a harmless improvement. > Meanwhile, we should consider enabling smtp_tls_connection_reuse, > too, otherwise the high-volume case can have an unexpected performance > difference between plaintext deliveries and TLS (namely, one TCP > handshake plus one TLS handshake per delivery). Good idea! -- micah