How do I safely stop qmail-send?
Back when we were running sendmail, it was always tricky to kill sendmail without risking the loss of current deliveries; what should I do with qmail-send? Answer: Go ahead and kill the qmail-send process. It will shut down cleanly. Wait for “exiting” to show up in the log. To restart it, run qmail-start the same way as it’s run from your system boot scripts. 7.2.
