change error message for missing certificate

The old error message is quite similar to the openssl `failed to retrieve issuer certificate` and can mislead users to troubleshooting certificate stores.

The new message should be distinct enough to make it clear to users that this is not a problem raised by the underlying SSL implementation, but a problem inside monitoring-plugins.

1 files changed, 1 insertions, 1 deletions

diff --git a/plugins/sslutils.c b/plugins/sslutils.c
index 719de575..96740b3a 100644
--- a/plugins/sslutils.c
+++ b/plugins/sslutils.c
@@ -201,7 +201,7 @@ int np_net_ssl_check_certificate(X509 *certificate, int days_till_exp_warn, int
         time_t tm_t;
 
         if (!certificate) {
-                printf("%s\n", _("CRITICAL - Cannot retrieve server certificate."));
+                printf("%s\n", _("CRITICAL - No server certificate present to inspect."));
                 return STATE_CRITICAL;
         }