1 files changed, 1 insertions, 0 deletions
diff --git a/lib/smtp.h b/lib/smtp.h
index cb3ef5854..514e6eb8a 100644
--- a/lib/smtp.h
+++ b/lib/smtp.h
@@ -65,6 +65,7 @@ struct smtp_conn {
   smtpstate state;         /* Always use smtp.c:state() to change state! */
   struct curl_slist *rcpt; /* Recipient list */
   bool ssldone;            /* Is connect() over SSL done? */
+  bool tls_supported;      /* StartTLS capability supported by server */
   bool size_supported;     /* If server supports SIZE extension according to
                               RFC 1870 */
 };