Plan 9 from Bell Labs’s /usr/web/sources/patch/applied/qmail/qmail.orig
#!/bin/rc sender=$1 shift addr=$1 shift /bin/upas/qer /mail/queue mail $sender $addr $* || exit 1 /bin/upas/runq /mail/queue /mail/lib/remotemail</dev/null>/dev/null >[2=1] & exit 0
