*) issue warning instead of failure: this is too common case
*) use ngx_log_error(), since OpenSSL does not set an error on the failure
diff --git a/src/http/modules/ngx_http_ssl_module.c b/src/http/modules/ngx_http_ssl_module.c
index 42854b4..7729b76 100644
--- a/src/http/modules/ngx_http_ssl_module.c
+++ b/src/http/modules/ngx_http_ssl_module.c
@@ -406,9 +406,10 @@
                                                ngx_http_ssl_servername)
         == 0)
     {
-        ngx_ssl_error(NGX_LOG_EMERG, cf->log, 0,
-                      "SSL_CTX_set_tlsext_servername_callback() failed");
-        return NGX_CONF_ERROR;
+        ngx_log_error(NGX_LOG_WARN, cf->log, 0,
+            "nginx was build with SNI support, however, now it is linked "
+            "dynamically to an OpenSSL library which has no tlsext support, "
+            "therefore SNI is not available");
     }
 
 #endif