Another glitch with latest beta

[Eugene Crosser <crosser@online.ru>]

Another thing with .48-970423: pipe works `strange' in the mailbox transport.
I have an entry in /etc/zmailer/db/aliases:

mailping: "|exec /usr/local/bin/mailping"

and it used to work, but now the script *is* executed, but the message
is not removed from the queue and the following is in the syslog:

Apr 24 18:39:12 chronos mailbox[15922]: S.nLr/p68048: to="|exec
/usr/local/bin/mailping", delay=00:00:27, xdelay=00:00:00, mailer=local,
stat=deferred message write to ""|exec /usr/local/bin/mailping"" failed: Error
0

Eugene