MTA_WANT_SECURE
if ((s->flags & MTA_WANT_SECURE) && !remote->tls_required) {
s->flags |= MTA_WANT_SECURE;
s->flags |= MTA_WANT_SECURE;
if (s->flags & MTA_FORCE_TLS || s->flags & MTA_WANT_SECURE) {
(s->flags & MTA_WANT_SECURE)) {
if (!(s->flags & MTA_WANT_SECURE)) {