NGX_ERROR_INFO    889 core/ngx_connection.c             case NGX_ERROR_INFO:
NGX_ERROR_INFO   1058 core/ngx_connection.c         case NGX_ERROR_INFO:
NGX_ERROR_INFO   1296 event/ngx_event_openssl.c             case NGX_ERROR_INFO:
NGX_ERROR_INFO   1355 event/ngx_event_openssl.c             case NGX_ERROR_INFO:
NGX_ERROR_INFO    202 http/ngx_http_request.c     c->log_error = NGX_ERROR_INFO;
NGX_ERROR_INFO   2583 http/ngx_http_request.c             c->log_error = NGX_ERROR_INFO;
NGX_ERROR_INFO   2673 http/ngx_http_request.c     c->log_error = NGX_ERROR_INFO;
NGX_ERROR_INFO    148 mail/ngx_mail_handler.c     c->log_error = NGX_ERROR_INFO;