1 files changed, 2 insertions, 0 deletions

diff --git a/plugins/check_smtp.c b/plugins/check_smtp.c
index 324549d4..fd492294 100644
--- a/plugins/check_smtp.c
+++ b/plugins/check_smtp.c
@@ -697,6 +697,8 @@ check_smtp_config_wrapper process_arguments(int argc, char **argv) {
                         } else {
                                 usage2(_("Invalid hostname/address"), argv[c]);
                         }
+                } else {
+                        result.config.server_address = strdup("localhost");
                 }
         }