smtp_receive_timeout = 2s
.ifdef _HAVE_DKIM
-log_selector = +received_recipients +millisec +dkim_verbose
+log_selector = +received_recipients +connection_id +millisec +dkim_verbose
.else
-log_selector = +received_recipients +millisec
+log_selector = +received_recipients +connection_id +millisec
.endif
.ifdef _HAVE_TLS