jail hangs at job unload

[mheily]

jails hang at job unload due to cron.

workaround is to kill -9 them from the main host.

[mheily]

I think it has something to do with sendmail:

freebsd11% ps ax|grep J
30075 - IsJ 0:00.01 /usr/sbin/syslogd -s
30127 - SsJ 0:00.00 sendmail: accepting connections (sendmail)
30130 - IsJ 0:00.00 sendmail: Queue runner@00:30:00 for /var/spool/clientmqueue
30134 - IsJ 0:00.00 /usr/sbin/cron -s
30159 - ZJ 0:00.03
30161 2 I+J 0:00.02 /bin/sh /etc/rc.shutdown
30164 2 I+J 0:00.00 /bin/sh /etc/rc.shutdown
30166 2 I+J 0:00.00 sleep 90
30203 2 I+J 0:00.00 /bin/sh /etc/rc.shutdown
30208 2 I+J 0:00.00 pwait 30134