use the mx hostname for sni on outgoing connection, not the reverse
authoreric <eric@openbsd.org>
Sun, 7 Mar 2021 20:56:41 +0000 (20:56 +0000)
committereric <eric@openbsd.org>
Sun, 7 Mar 2021 20:56:41 +0000 (20:56 +0000)
commit4a621ffcccfcf56c22afebf0b2b34e38a0260457
treecfb99edab811d9c3192293691a7be22d9421c50e
parente998cdbe84b5e13a79cce73f929ddf74819a5070
use the mx hostname for sni on outgoing connection, not the reverse
dns for the peer address.

spotted by krw@
ok krw@ tb@
usr.sbin/smtpd/mta_session.c