use the mx hostname for sni on outgoing connection, not the reverse

dns for the peer address.

spotted by krw@
ok krw@ tb@

diff --git a/usr.sbin/smtpd/mta_session.c b/usr.sbin/smtpd/mta_session.c
index 2445378..16f947d 100644 (file)
--- a/usr.sbin/smtpd/mta_session.c
+++ b/usr.sbin/smtpd/mta_session.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: mta_session.c,v 1.139 2021/03/05 12:37:32 eric Exp $  */
+/*     $OpenBSD: mta_session.c,v 1.140 2021/03/07 20:56:41 eric Exp $  */
 
 /*
  * Copyright (c) 2008 Pierre-Yves Ritschard <pyr@openbsd.org>
@@ -1596,7 +1596,7 @@ mta_tls_init(struct mta_session *s)
                return;
        }
 
-       io_connect_tls(s->io, tls, s->route->dst->ptrname);
+       io_connect_tls(s->io, tls, s->mxname);
 }
 
 static void