This issue has been fixed properly (for mail/postfix) in commit c01b34960fd5fbdc25249139e49f3c5a3baae1ef

In D56835#1320998, @bapt wrote:

more work on zombies
show resources for legacy scripts

In D56835#1320957, @bapt wrote:

reap hard; this time I hope it should be fine for your case @otis

In D56835#1320563, @bapt wrote:

In D56835#1320536, @otis wrote:

And, when invoked as /sbin/rcd on a live system, I'm getting:

1700  -  Is    0:00.02 |-- rcd -v
2599  -  Z     0:00.00 | |-- <defunct>
2600  -  Z     0:00.00 | |-- <defunct>
2601  -  Z     0:00.00 | |-- <defunct>
2602  -  Z     0:00.00 | |-- <defunct>
2603  -  Z     0:00.00 | |-- <defunct>
3180  -  Z     0:00.00 | |-- <defunct>
3182  -  Z     0:00.00 | |-- <defunct>
3185  -  Z     0:00.00 | |-- <defunct>
3228  -  I     0:00.00 | |-- rcd-exec: reaper: syslogd (pid 3378) (rcd-exec)
3371  -  SCs   0:00.00 | | |-- /usr/sbin/syslogd -s
3376  -  I     0:00.00 | | |-- syslogd: syslogd.casper (syslogd)
3378  -  Is    0:00.00 | | `-- syslogd: system.net (syslogd)
3359  -  Z     0:00.00 | |-- <defunct>
3361  -  Z     0:00.00 | |-- <defunct>
3362  -  Z     0:00.00 | |-- <defunct>
3364  -  Z     0:00.00 | |-- <defunct>
3365  -  Z     0:00.00 | |-- <defunct>
3368  -  Z     0:00.00 | |-- <defunct>
3536  -  I     0:00.00 | `-- rcd-exec: reaper: cron (pid 3715) (rcd-exec)
3715  -  Ss    0:00.00 |   `-- /usr/sbin/cron -s

too many defuct processes.

fixed

And, when invoked as /sbin/rcd on a live system, I'm getting:

What I miss a bit in manual page is the recommended way for plugging this into /etc/ttys.

On today's -CURRENT, when building rcd, I get:

LGTM. Feel free to commit.

I'd also say des@ should have a look as he's the author of sockstat. For me, I'm all in for this proposed change.