lib-smtp: client: Make clear that XCLIENT is not sent if the server has no support.

diff --git a/src/lib-smtp/smtp-client-connection.c b/src/lib-smtp/smtp-client-connection.c
index fb238b805faaa954a3126eff857ffb764b2e88a4..23294dd13705dd80534dfef189cd603a56dbe8a9 100644 (file)
--- a/src/lib-smtp/smtp-client-connection.c
+++ b/src/lib-smtp/smtp-client-connection.c
@@ -628,7 +628,8 @@ smtp_client_connection_send_xclient(struct smtp_client_connection *conn,
 
        if (!conn->set.peer_trusted)
                return;
-       if (conn->cap_xclient_args == NULL)
+       if ((conn->capabilities & SMTP_CAPABILITY_XCLIENT) == 0 ||
+           conn->cap_xclient_args == NULL)
                return;
 
        str = t_str_new(64);